Electric wafer soft sealing butterfly valve uses the integration structure, it can be operated by the input single (4 ~ 20 mA DC, 0 to 10 v DC or1-5 v) and the single-phase power supply, it has strong function, small volume, light and pleasant, reliable performance, simple, large flow capacity, etc. The valve is widely used in the automatic control system of food, environmental protection, light industry, petroleum, paper, chemical, teaching and research equipment, power and other industries.
This kind of valve is suitable for industries of food stuff, pharmacy, petrochemical, electric power, steel, industrial environment protection water treatment and building construction. It is an ideal device for flux adjustment and cut in water supply & drainage pipeline. Standard for design and manufacture Design standard: GB/T 12238 Flange standard: GB/T 9113.1 GB/T 9115.1 GB/T 9115.2 Structure length: GB/T 12221 Pressure test: GB/T 13927, JB/T 9092 Applicable medium: Water, steam, oil, acid corrosive and so on. Applicable temperature: Carbon steel: -29-425 Stainless steel:-40-600 Materials for main parts Body: Cast iron, cast steel, stainless steel, Cr. Mo. Steel, alloy steel Disc: cast steel, stainless steel, Cr. Mo. Steel, alloy steel Seat seal ring : stainless steel, multiple layers, polyester lactone , wear resisting material Stem : 2Cr13.1 Cr13 Stainless steel, Cr. Mo. steel Packing : Flexible graphite. Carton case.
PA66 GF regrind black color Pa6 / pa66 is mainly applied as follows: 1. Improves nylon water absorption and improves size stability of the product. 2. Improved nylon fire resistance to meet the requirements of electronics, electrical, communications and other industries. 3. Improved mechanical strength of nylon to achieve the strength of metal materials, metal replacement. 4. Improves nylon low-temperature resistance and enhanced resistance to environmental stress. 5. Improves nylon wear resistance to meet high wear resistance requirements. 6. Improves nylon antistatic properties to meet its extraction requirements and mechanical applications. 7. Improves nylon heat resistance to adapt to high temperature conditions such as car engines. 8. Reduce nylon cost and improve product competitiveness. Through the above modification, high performance and functionalization of nylon composite materials are realized, thereby promoting the development of industries involving high performance and high quality. MATERIAL: PA66 GF regrind black color CATEGORY: PA66 GF TYPE: Regrind GRADE: Black color SPECIFICATION: GF50. 1 full container available Origin: Tunisia LOADING WEIGHT: 23 Ton FOB (USD/Ton): 850$ - 1050$ Packaging: Jumbo Bag Est. Shipping Time: 15, 30, 45 days
From 40 mm to 300 mm dia butterfly valves, plug valves.
High Performance Fans Table Fans Model : OTF-3337 2000 RPM Baby Blue 400mm/16 Inch Sweep 2000 RPM High Speed Motor Innovative Design Aesthetic Looks Sleek and Stylish Aerodynamically Designed and Balanced blade for Superior Air Delivery Tilt Adjustment for Adjusting the Fan Upward & Downward at desired Angle Jerk Free and Uniform Oscillation Large and heavy base for enhanced stability Long lasting Powder coated guard set & Polymer Ring for anti-corrosion 100 % copper wire motor for long life 105 cmm stronger air delivery 110 Watts Powerful motor 3 speed choices with sleek and attractive switch panel Unique Telescopic arrangement for height adjustment Large & Heavy base for enhanced stability
High Performance Fans Table Fans OTF-3327 1250 RPM Gun Metal 400mm/16 Inch Sweep 1250 RPM Speed Motor Double ball bearing motor assuring no motor jam no motor burining Innovative Design Aesthetic Looks Sleek and Stylish Aerodynamically Designed and Balanced blade for Superior Air Delivery Tilt Adjustment for Adjusting the Fan Upward & Downward at desired Angle Jerk Free and Uniform Oscillation Long lasting Powder coated guard set & Polymer Ring for anti-corrosion 100 % copper wire motor for long life 65cmm stronger air delivery 55 Watts Energy efficient motor for power saving 3 speed choices with sleek and attractive switch panel Large & Heavy base for enhanced stability
FOB Price: US $20 - 2,000 / Set | Get Latest Price Min.Order Quantity: 1 Set/Sets MOQ 1SET OIL APPILICATION MANUAL CARBON STEEL BUTTERFLY VALVE Supply Ability: 20000 Ton/Tons per Year Butterfly valve supply capacity is large Port: Tian jin xin gang,Shang hai port,Ning bo port Payment Terms: L/C,T/T,Western Union,MoneyGram,amount less than 500 sets,we just accept 100% payments Quick Details Media: Water Model Number: OEM Product name: ASTM cf8 disc soft seal flange connection butterfly valve Medium: WOG(water/oil/gas) Size: DN15-2000 Color: Customer's Request Body material: Stainless steel/Carbon steel/Alloy Seal Material: Customer's Request Stem: carbon steel or ductile iron or stainless steel history of our factory: since 1996 Packaging & Delivery Packaging Details: Usually we use the wooden box and plastic film to pack this type of butterfly valve,we will follow your advice,anyway,the products will be kept safely and cleanly. Delivery Detail: 3-45 days ASTM cf8 disc soft seal flange connection butterfly valve Specification Table Size: DN15-2000 Pressure: PN10/16/25/40 Certification: ISO 9000 Medium: Air, water, steam, all kinds of corrosive medium, mud, oil, liquid metal and radioactive medium such as various types of fluid Application * Water treatment * Chemical industry * Waste effluent treatment * Paper industry * Construction * Drilling / Production * Cooling water circulation * Pneumatic conveyors * Compressed air * Gas plants Part Name Material Valve Body / Bonnet Carbon steel WCB /A105(Q235) Stainless steel 304/304L/316/316L Alloy steel 20#/cast iron/ductile iron Disc 304/304L/316/316L/ductile iron Stem Stainless Steel 304/304L/316/316L Seat PTFE/HDPE/EPDM/NBR/Viton/NYLON O-ring NBR, EPDM, VITON, HNBR/HSN The main vlalve products of our company include (1) ANSI gate valve, DIN gate valve, GOST gate valve, Soft sealing gate valve, Knife gate vave, Flat gate valve (2)Wafer type butterfly valve, flange type butterlfy valve, single eccentric butterfly valve, double eccentric butterfly valve, Three eccentric buterrfly valve (3)Check valve, lift check valve, swing check valve, wafer type check valve, spring check valve (4) ball valve, tee ball valve, 4 way ball valve, welding ball valve (5)strainer, filter, Y type strianer Materials WCB A216 ; Q235,ST37 ; LBC/LCC ; WC6/WC9 ; WCC ; CA15 A217 ; M-30C ; H.B/H.C ; HT250/GG25 ; GGG40 ; SS304 ; SS304L ; SS316 ; SS316L THE MAIN TYPE AND MATERIAL OF OUR VALVE Every valve must be tested before the delivery, the test including strength test and the enclose testing We also provide OEM services to customers in order to produce the strongest support. If you have any questions or you are interested in our products,please don't hesitate to cantact us!!!
Source food-approved printed push-up tubes for calippo-style ice lollies, water ice, frozen yogurt, and frozen popsicles. Our ice-lolly tube structure provides strength and prevents moisture/liquids from penetrating into or dripping out of the package, comprise of three superposed layers, including one thick cardboard layer double coated in equal thinner layers of polyethylene (PE) plastic. Request online quotation via our website at: indevcogroup.com/dairy-and-ice-cream/ice-lolly-tubes/
Wafer Soft Seal Butterfly Valve Size Range: 2 100 DN50-DN2500 Pressure: PN10,PN16 Class150 Body Materials: Ductile Iron/ WCB/CF8/CF8M Disc Materials: Ductile Iron/ WCB/CF8/CF8M Seat Materials: NBR, EPDM,PTFE Connection: Wafer Application fields: Municipal construction, water treatment, water supply and drainage, water conservancy projects, etc.
Product advantages: ï?¬All-in-one design, high integration and space saving installationï¼? ï?¬Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 yearsï¼? ï?¬Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range CAN2.0 communication interface, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable; Cell temperature management, can be automatically controlled with the air conditioner heater according to the cell condition to make the cell works at the most suitable temperature, and can be linked with the fire protection system as needed Performance characteristics Built-in BMS management system with comprehensive protection and monitoring control functions 5" LCD screen display, easy to operate, can check the temperature, voltage, working status, discharge current, dynamic and static SOC algorithm of a single cell, local display of alarm info, alarm level distinction, accurate positioning of abnormal cells Main control MCU can be centrally controlled and manage peripheral settings (AC charging module, inverter module, solar charging module) to adjust the charging current and voltage of peripheral devices according to the battery charging curve, making the system more reliable BMS battery management system, with SOC automatic calibration and high current passive balance function, combined with perfect operation control and management strategy, to achieve accurate and efficient management EMS energy management system, BMS with solar controller/AC charger, inverter centrally manages charge and discharge, effectively controls the charge and discharge current within the cell usage conditions, protects the cell and extend its service life
Product Features: 1 All-in-one design, high integration and space saving installation 2 Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years 3 Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability 4 Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage 5 BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range 6 CAN2.0 communication interface, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability 7 System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell 8 Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable; 9 Cell temperature management, can be automatically controlled with the air conditioner heater according to the cell condition to make the cell works at the most suitable temperature, and can be linked with the fire protection system as needed Performance characteristics 1 Small size and light weight, Maintenance-free 2 Environmental protection and pollution-free materials, no heavy 3 Accurately estimate the state of charge of the battery pack, that is, the remaining power of the battery, to ensure that the power of the battery pack is maintained within a reasonable range 4 Built-in BMS management system with comprehensive protection and monitoring control functions 5 5" LCD screen display, easy to operate, can check the temperature, voltage, working status, discharge current, dynamic and static SOC algorithm of a single cell, local display of alarm info, alarm level distinction, accurate positioning of abnormal cells 6 Main control MCU can be centrally controlled and manage peripheral settings (AC charging module, inverter module, solar charging module) to adjust the charging current and voltage of peripheral devices according to the battery charging curve, making the system more reliable
1 All-in-one design, high integration and space saving installation 2 Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years 3 Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability 4 Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage 5 BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range 6 CAN2.0 communication interface, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability 7 System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell 8 Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable; 9 Cell temperature management, can be automatically controlled with the air conditioner heater according to the cell condition to make the cell works at the most suitable temperature, and can be linked with the fire protection system as needed Performance characteristics 10 Accurately estimate the state of charge of the battery pack, that is, the remaining power of the battery, to ensure that the power of the battery pack is maintained within a reasonable range 11 Built-in BMS management system with comprehensive protection and monitoring control functions 12 5" LCD screen display, easy to operate, can check the temperature, voltage, working status, discharge current, dynamic and static SOC algorithm of a single cell, local display of alarm info, alarm level distinction, accurate positioning of abnormal cells 13 Main control MCU can be centrally controlled and manage peripheral settings (AC charger, inverter, solar charger) to adjust the charging current and voltage of peripheral devices according to the battery charging curve, making the system more reliable
Selected Anthracite Coal Granular Activated carbon for amine purify ,remove EDA, MEDA, DIPA, etc Granular Coal based activated carbon is made from coal though high temperature activation .It is black in appearance, non-toxic and tasteless, with large pores. It is featured by strong adsorption capacity, high wear-resistant performance etc. It is evtensively applied to solvent recovery, catalyst carriers, gas adsorption and water purification in the field of chemicals, environmental protection, power plant, electronics, petrochemical industry, farming, medicine, marine transportation. Packing 25kg PVC bags+1MT big bag or as customers'requested Trade terms FOB CNF CIF Payments terms 1).T/T 30%advance , 2).the balance against copy of B/L Delivery time After we receive deposit within 7-10days Sample Sample is free within 1kgs
IP65 explosion-proof and waterproof Zone 2 inverter is the most advanced DC to AC inverter, built in low frequency isolation transformer, IP65 industrial explosion proof rating enclosure, widely used in coal mines, wineries, chemical plants. Application: 1. Zone 1& 2 Hazardous locations, such as: underground coal mines, wineries, chemical plants, etc. 2. Environment with IIA, A A IIB, IIC types of explosive gas, such as: Flour mills, Aluminum powder plant, Metal mine factory, Graphite factory.etc. 3. Indoor (IP54) or outdoor(IP65) 4. Low noise/ Silent working mode 5. Explosion proof/ Spark-proof/ Waterproof/ Anti-dust/ Shock-proof. Features: 1. Durable: 4.0 thick steel plate seamless welding, surface spray, beautiful appearance. 2. Explosion proof rating: Explosion-proof standard is EXdIIBT4. 3. More reliable: Built-in low frequency isolation transformer, strong ability of anti-interference. 4. Widespread application: DC to AC, Single phase to Three phase, High voltage to Low voltage or Low voltage to High voltage. 5. Pure sine wave output, quick instant response speed 6. Excellent performance of taking load, it can take a variety of loads, such as: halide lamps, motors, welding machines, precision machine tools, fluorescent lamps, energy-saving lamps, etc. 7. Powerful protection functions: With over-current, over load, under voltage, over voltage, short circuit, over heating and other protection. 8. High protection class: With good performance of anti-dust, waterproof,shockproof. 9. 100% full power output: Can be 7* 24 hours continuously working 10. Accept customized: Can be customized according to customers' requirements. 11. Adopted the sixth generation IPM intelligent power module from Mitsubishi,high efficiency and stable performance, intelligentized, modular, simple structure design, very easy and low cost for future's maintenance. 12. Advanced functions: 1) Setting flexible: The DC input voltage range, output voltage, output frequency all can be set. 2) Two kinds of work mode: Can add AC bypass input(Optional), Battery priority, AC bypass as back up or AC bypass priority, battery as back up. 3) Two kinds of start mode: Variable frequency start and Step down voltage start. with stronger capacity to drive inductive load. 4) RS485 remote monitoring(Optional) 5) Big LCD color screen display, modular structure very easy for future's maintenance 6) High efficiency > 94% and low loss, design service life > 15 years.
Product introduction: This product is composed of high quality lithium iron phosphate core (series-parallel connection) and advanced BMS management system. It adopts master-slave mode, which is convenient for monitoring and controlling the input and output system. The charging and discharging are independent, it can control the charging current of the AC charger and solar controller according to the battery temperature, voltage and SOC to better protect the battery cells from overcharging, overheating and discharging. It has high reliability and long life, products developed for applications such as solar energy storage, industrial and commercial energy storage, household energy storage, charging piles, data room and other applications. Product advantages: All-in-one design, high integration and space saving installationï¼? Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range CAN2.0 communication interface, has the advantages of strong real-time performance, long transmission distance, strong anti-electromagnetic interference ability System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable; Cell temperature management, can be automatically controlled with the air conditioner heater according to the cell condition to make the cell works at the most suitable temperature, and can be linked with the fire protection system as needed
EES All in one system 16KWH LiFePO4 Lithium Battery with AC Charger and 10KW Inverter for solar energy storage application ESS including LiFePO4 Lithium Battery with BMS, off grid pure sine wave inverter, AC/DC charger. This product is composed of high quality lithium iron phosphate core (series-parallel connection) and advanced BMS management system. It adopts master-slave mode, which is convenient for monitoring and controlling the input and output system. The charging and discharging are independent, it can control the charging current of the AC charger and solar controller according to the battery temperature, voltage and SOC to better protect the battery cells from overcharging, overheating and discharging. It has high reliability and long life, products developed for applications such as solar energy storage, industrial and commercial energy storage, household energy storage, charging piles, data room and other applications. Product advantages: All-in-one design, high integration and space saving installation Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable;
Our All in one system 32KWH LiFePO4 Lithium Battery with AC Charger and 12-15KW 120/240V Inverter for mobile vehicle application ESS including LiFePO4 Lithium Battery with BMS, off grid pure sine wave inverter, AC/DC charger. This product is composed of high quality lithium iron phosphate core (series-parallel connection) and advanced BMS management system. It adopts master-slave mode, which is convenient for monitoring and controlling the input and output system. The charging and discharging are independent, it can control the charging current of the AC charger and solar controller according to the battery temperature, voltage and SOC to better protect the battery cells from overcharging, overheating and discharging. It has high reliability and long life, products developed for applications such as solar energy storage, industrial and commercial energy storage, household energy storage, charging piles, data room and other applications. Product advantages: All-in-one design, high integration and space saving installation Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and wide temperature range System parameters can be set through the host computer, such as fan start/stop temperature, charger maximum current setting, charge and discharge current correction, SOC correction, with insulation leakage detection function to prevent oil leakage and short circuit of the cell Integrate Solar charge controller or AC charger optional, BMS communication control, more safe and reliable;
Product introduction: This product is composed of high quality lithium iron phosphate core (series-parallel connection) and advanced BMS management system. It adopts master-slave mode, which is convenient for monitoring and controlling the input and output system. The charging and discharging are independent, it can control the charging current of the AC charger and solar controller according to the battery temperature, voltage and SOC to better protect the battery cells from overcharging, overheating and discharging. It has high reliability and long life, products developed for applications such as solar energy storage, industrial and commercial energy storage, household energy storage, charging piles, data room and other applications. Product advantages: All-in-one design, high integration and space saving installation Using high-performance lithium iron phosphate cells, laser welding, good cell consistency, designed service life of more than 10 years Charging and discharging are controlled separately, which is convenient and reliable to control charging and discharging. The discharge port will not be disconnected when over-charging, and the charging port will not be disconnected when over-discharging, the system has good stability Master-slave mode, passive equalization, can manage the equalization resistance, can set the equalization start voltage difference, and monitor the equalization resistance temperature, more intelligent and safe, and reduce the impact of barrel effect on system energy storage BMS adopts NXP(USA) automotive-grade high-performance chips, with strong anti-interference, good reliability and a wide temperature range
MPPT Solar charge controller Feature 1. We choose high speed and high performance 32-bit processor with excellent EMC design 2. Advanced MPPT tracking algorithm, the tracking efficiency more than 99% 3. High performance IGBT power module as electronic switch, there is no any mechanical switch, plus multiphase synchronous rectification technology, improves the stable greatly 4. Ultrafast maximum power point tracking speed to ensure tracking efficiency 5. Accurate identification and tracking of multi-peak maximum power points 6. With current-limiting charging function, charging current can be set, friendly and compatible with various capacity batteries. 7. Widely PV arraysâ?? voltage input, this can save the cost of PV combiner box, wires and construction 8. Full enclosed duct design and high-speed fan for cooling makes the controller suitable for various harsh environment 9. It shows the ambient temperature. It also has automatic temperature compensation function and RTC real time function 10. The perfect battery protection function and multi-stage charging improves battery life 11. It has the statistical function of generating capacity which is very convenient for customers to view the daily, monthly and total charging capacity of the controller. 12. Complete menu display and operation, plus the humanized design of browsing interface, these makes the operation more easy 13. It can work with GEL. LEAD-ACID, LITHIUM and other type battery 14. Twice protection function to protect battery from damage when the power switch is down (optional) 15. Standard Modbus communication protocol for RS-485 or GPRS communication to extend the communication distance (optional function)
We choose high speed and high performance 32-bit processor with excellent EMC design Advanced MPPT tracking algorithm, the tracking efficiency more than 99% High performance IGBT power module as electronic switch, there is no any mechanical switch, plus multiphase synchronous rectification technology, improves the stable greatly Ultrafast maximum power point tracking speed to ensure tracking efficiency Accurate identification and tracking of multi-peak maximum power points With current-limiting charging function, charging current can be set, friendly and compatible with various capacity batteries. Widely PV arrays voltage input, this can save the cost of PV combiner box, wires and construction Full enclosed duct design and high-speed fan for cooling makes the controller suitable for various harsh environment It shows the ambient temperature. It also has automatic temperature compensation function and RTC real time function The perfect battery protection function and multi-stage charging improves battery life It has the statistical function of generating capacity which is very convenient for customers to view the daily, monthly and total charging capacity of the controller. Complete menu display and operation, plus the humanized design of browsing interface, these makes the operation more easy It can work with GEL. LEAD-ACID, LITHIUM and other type battery Twice protection function to protect battery from damage when the power switch is down (optional) Standard Modbus communication protocol for RS-485 or GPRS communication to extend the communication distance (optional function)