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Wall-mounted integrated teaching system
Item No. GY-DMT018

Basic configuration and parameters
1. Wall-mounted structure, sheet metal thickness is greater than 1.2mm
2. When opening the control door of the physical display stand, the air bar will pop up the door and keep it horizontally placed. The A4 size textbook can be displayed on it. The display stand is hidden when the door closed.
3. High integration of multi-functional wireless microphone, multimedia teaching host and physical display stand, stereo amplifier, intelligent central control system, delay shutdown system and speaker as one;
4. Computer configuration: CPU: Intel Core i5 processor, hard disk: hard disk: more than 500G solid SSD 32G, 4G memory, wireless network card (optional). Solid state disk and wireless network card are on-board PCI-E interfaces, and USB or SATA interfaces are not accepted.
5. In response to the national policy of energy conservation and emission reduction, the power of the whole machine is less than 150W;
6. Built-in 2.4G multi-functional wireless microphone can be held by hand or equipped with head-mounted microphone to speak, and different frequency points can be automatically selected to meet the teaching needs of non-interference when used in 100 classrooms at the same time; Multi-function wireless microphone with laser pointer, PPT up/down page function button and volume adjustment button, wireless control of the computer running up/down PPT pages, and microphone volume.
7. Built-in 2x20W stereo digital power amplifier adopts DSP digital chip and BLP digital feedback amplification technology, intelligent detection sampling, automatic detection and adjustment of microphone volume gain, automatic search of noise frequency point to complete the suppression of sound feedback. It has power output and audio output interface.
8. built-in delay power off function, when the "power" button is pressed, you can leave while the device is directly turned off, no need to wait for the projector bulb cooling for power off, the system will automatically delay 90 seconds after power off.
10. Built-in physical display platform: shooting size: A4(210mm*297mm)/ scanning speed: 1 second/resolution: 5 million/image color: 24 bits/image format: JPEG,TIF,PNG,GIF,BMP/ video format: AVI format/interface: USB2.0, No external power/light source: natural light +LED light (service life: 3000 hours)/image control: brightness adjustment, exposure adjustment, sharpness adjustment, color adjustment, gain control, etc. / text recognition: OCR recognition function/can write or annotate the presentation notes directly on the screen or electronic whiteboard.
11. Device interface: VGA IN*2, VGA OUT*1, HDMI IN*1, HDMI OUT*1, Audio IN*2, Audio OUT*2, USB*6, LAN*1, AC IN*1, AC OUT*1
Qualification requirements
1. The product has passed 3C, ISO9001, ISO14001, ISO18001 certification and CE FCC, ROSH certification, video booth software Copyrights;

Schritt fr Schritt, wie nehmen Sie PCB
1: der erste Schritt ist, um ein Stck des PCB, zuerst in das Papier alle Elemente des Modells, Parameter, sowie die Lage, vor allem die Diode, die Richtung zu erfassen die Kompressoren Rohr, IC die Richtung der Lcke. Eine digitale Kamera verwenden, um zwei Fotos von Ihrem Standort 2:Step

2: Entfernen Sie alle Gerte und das Zinn aus dem PAD entfernen.
Reinigen Sie die Platine mit Alkohol, dann legen Sie es in den Scanner und beginnen Sie die POHTOSHOP, in Farbe streichen Sie und drucken Sie es aus. 3:Step

3: der oberen Schicht und die Unterschicht werden leicht vom Wasser Gaze Papier geschliffen, poliert, um die Kupferfolie zu glnzen, legen in den Scanner aktivieren Sie PHOTOSHOP und Farbe in zwei Schichten. Beachten Sie, dass die Platine muss horizontal in den Scanner, sonst das gescannte Bild kann nicht verwendet werden.

4: der vierte Schritt passen Sie den Kontrast von der Leinwand, der Kontrast, die Kupferfolie Bestandteil und nicht Teil der Kupferfolie Kontrast, dann die erste Figur in schwarz und wei, berprfen Sie, ob die Zeile klar, wenn nicht zu lschen, wiederholen Sie diesen Schritt. Wenn klar ist, speichern Sie das Bild als ein schwarz / wei BMP-Format-Datei oben. BMP undProgrammaufruf BMP.

5:Fifth, die zwei BMP-Format in PROTEL-Format-Datei bzw. in PROTEL bertragung in zwei Schichten, wie zwei Schichten des Pads und den Speicherort der die VIA grundlegende Zufall, schlgt mehrere
Schritte vor einen guten Job machen, wenn es eine Abweichung, wiederholen Sie dann Schritt 3.

6:Sixth, an die Spitze. BMP in TOP. PCB, Mitteilung an Seide Ebene konvertiert werden, die der gelben Schicht, und dann ist die oberste Schicht und Sie setzen Sie das Gert gem den zweiten Schritt. Entfernen Sie die Seide Schicht nach dem Gemlde.

7:Step 7: Schalten Sie den BOT. BMP in ein BOT. PCB, beachten Sie, dass du gehst in die Seide Schicht, konvertieren, das ist die gelbe Schicht, und dann Sie die Linie auf der Ebene der BOT verfolgen. Entfernen Sie die SeideSchicht nach dem Gemlde.

8:Step 8, legen Sie oben in PROTEL. Platine und BOT. Die PCB hereinkommt, und es ist OK fr ein Bild 9:Step 9, Einsatz Laser-Drucker, oberste Lage, Unterschicht bzw. gedruckt auf transparenter Folie (Verhltnis 1:1), setzen Sie den Film auf der Platine, die Fehler zu vergleichen, wenn
Ja, sind Sie fertig

The design of a switch mode power transformer will differ depending upon the type of circuit used. There are many variations of switching mode power supplies, but they can be narrowed down to three basic circuit configurations (each also has a mirrored configuration); buck, boost, and fly back. Be aware that the name for the buck circuit varies from industry to industry and from person to person. It may also be referred to as an inverter, d.C. Converter, forward converter, feed forward, and others. There are also unipolar and bipolar (push-pull) versions.

Features :

* non-corrosive
* light weight
* long lasting
* high performance
* long performing life

CDM4160 is a new unit which uses TGS4160, Figaro's durable solid electrolyte CO2 sensor. Due to Figaro's proprietary idea for signal processing with a microcomputer,no maintenance is required for this module. By application of DC voltage to the module, an analog output voltage proportional to CO2 concentration can be obtained.

The module can generate a control signal based on a user-selectable threshold concentration. The features mentioned above make this module ideal for air quality control applications in homes, offices and factories as well as in the field of agriculture.

Features:
* High selectivity to CO2
* Long life
* Maintenance free
* Pre-calibrated
* Low cost
* Wide detection range
* Excellent durability

Applications:
* Indoor air quality control in offices, homes, and factories
* CO2 monitors
* Agricultural applications

A single unit, based around a powerful 32-bit floating-point ARM microcontroller, designed to provide a complete analysis of local air quality.

The unit deploys four electrochemical sensors, an NDIR CO2 sensor and a laser particle monitor. These combine with a temperature and relative humidity sensor, and GPS is used for accurate location and timestamping.There is also an optional microphone to provide ambient noise information. Data is stored locally and uploaded to a central management site.

Specification
accurate electrochemical cells (Alphasense A4) monitoring CO, NO, NO2 , and O3 down to ppb levels. Other gases can be sensed if required (eg SO2 ).
digital NDIR CO2 sensor (Atmospheric Sensors/Alphasense or SenseAir).
laser optical particle counter (Alphasense) to provide PM1, PM2.5 and PM10 readings.
PID sensor for volatile organic compounds (VOCs) (Alphasense).
temperature and relative humidity sensor (Atmospheric Sensors).
high-sensitivity GPS module capable of accurate location and time measurement even inside buildings.
microphone to characterise ambient noise, based on a hardware RMS level detector.
data can be sampled at high rates, which are normally averaged over 20 seconds, with data transmission every 15 minutes. This can be configured to suit each application.
communication link to remote database via GPRS. This includes the ability to 'store and forward' data in times when the network is down or temporarily overloaded. The unit requires a data-capable SIM card service, which can be provided either by Atmospheric Sensors or by other providers by discussion.
local storage on 16GB SDCard of extended results from test for later recovery and to act as a backup of results sent over the GPRS link.
mains power supply, with waterproof connector.
externally visible LED to indicate unit status.
the unit may be used either indoors, or outdoors if protected by a Stevenson Screen, or similar enclosure. Wall mount brackets are supplied with each unit, permitting easy installation.

An additional advance in the case of metal oxide sensor technology is the use of AC rather than DC interrogation of the sensing material.This approach provides complementary atmospheric composition information from the real part and the imaginary part of the sensor impedance and introduces a marked enhancement in terms of sensitivity and selectivity.

The SMS is designed to work with up to 8 metal oxide gas sensors. It has circuits to accurately control sensor heater temperature based on digital control loops. The individual sensor heater 'C resistance and temperature coefficients can be set, and there are a number of heater setpoint algorithms that can be selected as parameters.These include temperature ramps, timed temperature schedules and control by an external RS485 interface.Temperature setpoint algorithms can be set in pairs, or slaved to the first pair as required.

The SMS unit measures the impedance of the sensing element by applying a controllable synthesised sine wave to a potential divider formed by a top resistor (selectable between 100kR and1MR by an on-board jumper) and the sensor:

The sensor resistance is displayed by the PC monitor software, as is a measure of the quadrature (reactive) component.

Specification
4 or 8 MMO sensor channels, configurable for a wide range of MMO sensors.
digital control of heater temperature using an adaptive algorithm and a number of heater temperature profiles to aid selectivity.
measurement of real and imaginary sensing element impedance.
usable with a wide range of sensors, to sense alternative gases.
a range of interface options including CAN, RS485 and RS232.
supplied with a suitable mains to 12V power supply plug.
available with PC monitor software, or information to allow users to write their own interface software.

OPC-R1 PM2.5 Particle Sensor

* Reports PM1, PM2.5, PM10 plus histograms
* PC software supplied
* Removable fan exit adaptor
* Small size and low power consumption
* Configurable to specific applications

OPC-R1 PM2.5 Particle Sensor SPECIFICATION
* Particle range: 0.4 to 12.4 Spherical equivalent size (based on RI of 1.5)
* Size categorisation: 16 Number of software bins
* Sampling interval: 1 to 30 Histogram period (seconds)
* Total flow rate: 1.6 L/min (typical)
* Max particle count rate: 10,000 particles/second
* Measurement mode: 95 mA (typical)
* Laser on, fan off: < 5 mA (typical)
* Voltage range: 4.8 to 5.2 VDC
* Switch-on transient: < 5000 mW for 1ms
* Temperature range: -10 to 50 'C
* Humidity range: 0 to 95% rh (continuous) (non-condensing)
* Weight: < 30 g

Low Cost HVAC Carbon Dioxide Sensor NDIR CO2 Sensor MisIR Summary
NDIR CO2 Sensor MisIR is a low power (20mW), high performance CO2 sensor. Based on GSS patented solid state IR sensor technology and innovative optical designs, MISIR is configured to meet the requirements of the HVAC and Demand Led Ventilation markets.

Low Cost HVAC Carbon Dioxide Sensor NDIR CO2 Sensor MisIR Characteristic
* Low Power 20mW
* Measurement ranges from 0 to 1%
* Low noise measurement

OXY-LC Oxygen Sensor Interface Board Description
The OXY-LC Oxygen Sensor Interface Electronics provides the necessary electronics to power and control SST range of zirconium dioxide (ZrO2) sensors.

The OXY-LC Oxygen Sensor offers various user configurable output variants RS485, PWM, 0-10Vdc and 4-20mA. The RS485 Modbus RTU Protocol offers various benefits over other output types but most importantly it allows complete control of the sensor operation and access to all available information including sensor diagnostics, barometric pressure and pressure sensor temperature.

The adaptive software filtering which enables it to provide a fast response coupled with a stable oxygen output. In addition to this, the OXY-LC Oxygen sensor interface electronics offers a high accuracy linear output for all of our zirconium dioxide oxygen sensors.

The built in pressure sensor allows for barometric pressure compensation and the interface mounted screw terminals offers easy wiring with reverse voltage and transient overvoltage.

OXY-LC Oxygen Sensor Interface Board FEATURES
* Provides the electronics necessary to power and control SST range of zirconium dioxide (ZrO2 ) sensors
* Built in pressure sensor for barometric pressure compensation
* Interface mounted screw terminals for easy wiring with reverse voltage and transient overvoltage

OXY-LC Oxygen Sensor Interface Board BENEFITS
* Adaptive software filtering provides a fast sensor response coupled with a stable oxygen output
* High accuracy linear outpu

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Optomax Industrial Glass Series Liquid Level Switches Description
The Optomax Industrial Glass range liquid level switches can operate in aggressive environments due to their stainless steel and glass construction while offering industrial supply voltages and outputs that can directly drive loads.

The microcontroller based Optomax Industrial Glass Range liquid level switches are solid state, incorporating an infra-red LED and phototransistor which are optically coupled by the tip when the sensor is in air. When the sensing tip is immersed in liquid, the infra-red light escapes making the output change state. The sensor can detect the presence or absence of almost any liquid type; oil or water based. It is insensitive to ambient light and is not affected by foam when in air or by small bubbles when in liquid.

A range of N and P type output configurations can sink or source up to 1A at supply voltage ranges from 4.5 to 15.4Vdc or 8 to 30Vdc and can be configured to output a high or low signal in either a wet or dry state. Options for connecting to inductive loads or digital interfaces are also available.

With housing threads suitable for external sensor mounting and for use in two operating temperature ranges; Standard (-25 to 80'C) or Extended (-40 to 125'C).

LLG210D3-00x Liquid Level Switches FEATURES
* Liquid level switches that can detect almost any liquid type; oil or water based
* Suitable for harsh environments; robust stainless steel housing and glass tip
* Choice of mounting threads

LLG210D3-00x Liquid Level Switches BENEFITS
* High power
* Industrial supply voltage
* Direct load drive

Fecs40-1000 for the detection of carbon monoxide

Figaro's carbon monoxide sensor fecs40-1000 is a unique electrochemical-type carbon monoxide sensor. Its most notable feature is its unique leak-proof structure, making it ideal for co monitors and detectors in various fields.

Fecs40-1000 carbon monoxide (co) sensor features:
* high sensitivity/selectivity to co
* quick response to co
* linear output
* long life
* stable baseline
* unique leak-proof structure

Fecs40-1000 carbon monoxide (co) sensor applications:
* portable and fixed installation co monitors
* co detectors
* ventilation control for indoor parking garages

Fecs40-1000 carbon monoxide (co) sensor specifications:
Detection gas: carbon monoxide
Detection range: 0 ~ 1000 ppm
Maximum overload: 1500 ppm
Output signal: 70±15 na/ppm
Repeatability: ±2%
Resolution: 1 ppm

FECS41-250 for the Detection of Nitric Oxide

Figaro's Nitric Oxide Sensor FECS41-250 is a unique electrochemical-type nitric oxide sensor. Its most notable feature is its unique leak-proof structure, making it ideal for NO monitors and detectors in various fields.

FECS41-250 Nitric Oxide (NO) Sensor Features:
* High sensitivity/selectivity to NO
* Quick response to NO
* Linear output
* Long life
* Stable baseline
* Unique leak-proof structure

FECS41-250 Nitric Oxide (NO) Sensor Applications:
* Portable and fixed installation NO monitors
* NO detectors
* Ventilation control for indoor parking garages

FECS41-250 Nitric Oxide (NO) Sensor Specifications
* Detection Gas: Nitric Oxide
* Detection Range: 0 ~ 300 ppm
* Maximum Overload: 1000 ppm
* Output Signal: 400 ± 80 nA/ppm
* Repeatability: ±2%
* Resolution: 0.5 ppm

UV-A Sensor GUVA-C32SM

GENERAL DESCRIPTION
GUVA-C32SM supports integrated functions of ultraviolet light sensors such that can be easily configured and used in user applications.
GUVA-C32SM comprises photodiodes, amplifiers, ADC, digital control logic and I2C interface circuit.GUVA-C32SM receives UVA and outputs digital count according to the intensity. Power consumption can be minimized by proper use of power management mode.

FEATURES
- UVA sensing with 16-bit resolution
- Support UV index measurement (0 - 16)
- Programmable gain and integration time
- I2C slave interface up to 400KHz
- Power management modes
- Shutdown current : 0.8uA typical
- Supply voltage of 2.2V to 3.6V
- 2.0mm x 2.3mm x 1.4mm ,4-pin COBpackage

APPLICATIONS
Smartphone, Wearable devices, IoT, watch, weather station, bicycle navigation, gaming, accessary


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Features:
Gas concentration is digitally and quantitively
Output by means of communications
Alarm output can be set through programming
Factory calibrated, temperature compensated
Compact size, low cost

Applications:
Front-end solution for methane gas alarm
Simple methane gas alarm output

Description
Fsm-t-01 is a pre-calibrated module for methane gas alarm
Which applies tgs2611 sensor together with optimized
Classic circuit measuring methane gas concentration. The
Module is pre-calibrated by figaro's highly accurate calibration
Equipment and manufactured with mature aging process.
The purpose of the module design is to save the development
And production cost of the user to its greatest extent, making
It easier and more convenient for them to manufacture gas
Alarm for civil natural gas.

The module is designed with two different interfaces
Considering the convenience for use. Ttl level’s asynchronous
Communication interface allows the user to read real time
Gas concentrations with very simple commands;also different
Alarm thresholds can be set through communication programming.
When the gas concentration reaches set value alarm
Output signal would be generated automatically from the
Alarm terminal.

Besides , this compact sized module applies a socket type
Design which facilitates regular replacements of the sensors.
For some main board, different modules can also be replaced
Simply by plugging and pulling out, fulfilling the functions of
Detection and alarming for methane and other gases.

AR8200 Carbon Dioxide Detector CO2 Detector Introduction
This Carbon Dioxide detector can detect the Carbon Dioxide content between the 0~5000ppm and shows the Carbon Dioxide volume with an LCD.

The product features:
* As it uses the imported Carbon Dioxide sensor, it is very precise and its performance is stable.
* It uses the intellectualized design and has gotten multiple functions.
* With highlight backlight display and acoustic-optic alarming, it is easily configured.
* The embedded temperature compensation can make the meter measuring the correct value in the environment temperature of -10~40C.
* As its case is ergonomically designed, it looks handsome, feels good and is easy to carry.

AR8200 Carbon Dioxide Detector CO2 Detector Applications:
* Carbon Dioxide manufacturing workshop
* Petroleum refining and petrochemical plants
â?¢ Carbon Dioxide content detecting in trains and automobiles
* Carbon Dioxide content detecting in minerals
* Carbon Dioxide content detecting during mountain climbing and in sealed place
* Other industries and plants using Carbon Dioxide.

AR8200 Carbon Dioxide Detector CO2 Detector Technical Features
* Gas Type: Carbon Dioxide (CO2)
* Measuring range: 0 to 5000ppm
* Resolution: 1ppm
* Measuring Principle: Optics
* Display:Large LCD Display
* Operation Tempearture: -10C ~ 60C
* Operation Humidity: 0 to 99.9% RH
* Power supply: 3 x 1.5V AA battery
* Size: 182*66*32(mm)

C4E Conductivity Sensor electrode technology:
The sensor works with 4 electrodes: An alternating current of constant voltage is established between a primary pair of electrodes in graphite. The secondary electrodes in platinum regulate the voltage imposed to the primary electrodes to reflect the fouling. The voltage measured between the primary electrodes is the function of the resistance and therefore a measurement of the conductivity.

C4E Conductivity Sensor Digital Technology :
The smart digital C4E sensor stores calibration history data within the sensor. This allows a 'plug and play' system without re-calibration.

C4E Conductivity Sensor Digitally optimised measurement technology
* 4 electrode conductivity sensor (2 graphite & 2 platinum)
* Smart sensor stores configuration settings and calibration history
* Range 0-200 mS/cm
* Digital sensor - Modbus RS-485
* Robust and watertight

C4E Conductivity Sensor Applications
* Industrial effluent treatment
* Urban wastewater treatment
* Surface water monitoring
* Sea water
* Drinking water

C4E Conductivity Sensor Specification
* Measured conductivity ranges: 0-200.0 uS/cmâ??
* Resolution: 0.01 to 1 according the range
* Accuracy: +/- 1 % of the full range
* Response time: < 5 s
* Working temperature: 0'C to 50'Câ??
* Signal interface: Modbus RS-485 ( option SDI-12)
* Maximum pressure: 5 barsâ??
* Protection: IP68

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Features
1. 6-digit 1.2inch super luminant LED display
2. 6-digit 40mm LCD display with LED backlight
3. 6-key flat membrane panel keypad
4. One configurable user-defined function key
5. One configurable software set-point
6. Supports 4- and 6-wire loadcell connections
7. Drives up to 4X350ohm or 8X700ohm loadcells
8. Built-in 6V/4.0Ah rechargeable battery

Specifications
1. Accuracy Class: III Class (eqv. to OIML R76)
2. Internal Resolution: 1 000 000 counts
3. Tare range: 100%F.S.
4. Auto-Zero range: 20%F.S.
5. Manual-Zero range: 4%F.S.

Options
1. Measurement unit switch
2. Calibration switch with seal protection
3. One full duplex RS-232 serial port
4. One RS-485 serial port
5. One RS-232 extended printer port
6. Built-in real-time clock


12pcs/carton, gross weight 27kg, 61*42*52cm

Type indoor with p2.5, p3, p4, p5, outdoor with p6, p8, p10
Configuration, all is smd
Display, size about 640mmx1280mm
Frame, size 715mmx1600mm
Brightness, for indoor more than 1200nits, outdoor more than 5500nits
Refresh, rate more than 480hz
Power, consumption max 1000w/h, min is 600w/h
Average max 400w/h, min is 170w/h


940mmx1500mmx250mm, 45kg

Long life oxygen sensor for medical, oxygen incubators, food industry, oxygen detectors
Model number: ke-25/ke-50


Features:
* long life - 2.5~10 years in ambient air
* virtually no influence from co2, co, h2s, nox, h2
* low cost
* operates in normal ambient temperatures
* stable output signal
* no external power supply required for sensor operation
* no warmup time is required

Applications:
* medical - anesthetic instruments, respirators, oxygen-enrichers
* biotechnology - oxygen incubators
* food industry - refrigeration, greenhouses
* safety - air conditioners, oxygen detectors, fire detectors020406080100120020406080100120output

Description
Gs oxygen sensor ke series (ke-12, ke-25, and ke-50) are unique galvanic cell type oxygen sensors developed in japan in 1985. Their most notable features are long life expectency, excellent chemical durability, and no influence by co2. Ke series oxygen sensors are ideal to meet the ever-increasing demand for oxygen monitoring in various fields such as combustion gas monitoring, the biochemical field, medical applications, domestic combustion appliances, etc.

Cheap carbon monoxide sensor co sensor tgs5042
Model number: tgs5042

Features:
* battery operable
* high repeatability/selectivity to co
* linear relationship between co gas concentration and sensor output
* simple calibration
* long life
* ul recognized component
* meets ul2034, en50291, and rohs requirements

Applications:
* residential and commercial co detectors
* co monitors for industrial applications
* ventilation control for indoor parking garages
* fire detection

Description
Figaro’s tgs5042 is a battery operable electrochemical sensor which
Offers several advantages over traditional electrochemical sensors.
Its electrolyte is environmentally friendly, it poses no risk of electrolyte l
Eakage, can detect concentrations as high as 1% co, operates in a
Range from -5' and +55'c, and it has lower sensitivity to interferant gases.
With a long life, good long term stability, and high accuracy, this sensor
Is the ideal choice for co detectors with digital display. Oem customers
Will find individual sensors data printed on each sensor in bar code from,
Enabling users to skip the costly gas calibration process and allowing
For individual sensor tracking. Tgs5042 utilizes a standard aa battery-sized package.