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APPLICATION
Suitable for inside prisons, labor camps, drug rehabilitation and other intercom, communication and other places which need monitoring.

Etross-6188 is gsm fixed cordless desktop telephone that support sms and fm radio, just insert gsm mobile sim card to make and receive calls, no need plug phone line cable.

Gsm fixed cordless phone descrition:
Spanish&english language quad band etross 6188 wireless landline
Brand:etross or oem brand
Model no.: etross-6188
Product name: gsm fixed cordlesstelephone/phone
Frequencies: quad band gsm850/900/1800/1900mhz

Features:
1. Support gsm850/900/1800/1900mhz
2. Caller id
3. Language:spanish, english, french, russian, portuguese, arabic(optional)
4. Sms function
5. Ip no. Setting
6. Software upgrade jack
7. Data service, support csd and gprs class 10/8. Connect pc by usb port
8. Call in / call out /call divert/ call waiting limitation function
9. Lock up function: sim card, network, cell and operated company
10. Local no. / direct no. / limited no. Setting
11. Speed dial function
12. Redial function
13. Support three-way conference call
14. Save more than 100 sms on the phone
15. 7-level headphone volume and silence adjustable
16. Speaker phone
17. Low-power indicator
18. Storage 20 missed call or received calls and the last ten dialed number
19. Voice mail function
20. Packing size (mm): 220*160*53
21. Support stk1114
22. Emergency call: at off-hook or hand-free state, can calling emergency number without

Operating requirements:
1. Operating freq.: gsm900-1800mhz/850-1900mhz automatically switch
2. Normal operation temperature: -30 ---70
Restricted operation temperature: -30 ---80
Storage temperature: -40 ---85
3. Environment noise: below 60db(a)
4. Support simcard 1.8v/ 3v
5. Channel interval: 200khz
6. Receive sensitivity:

1.CPU:Mediatek MTK6789 Octa-core Helio G99 2.0GHz, 6nm process;
2.Operation System: Android 12.0;
3.Display: 6.78 inch Capacitive Multi-touch screen,IPS FHD+ 2400*1080 Pixels;
4.4G LTE Networks: GSM: B5/B3/B8/B2,WCDMA:B1/B2/B4/B5/B6/B8/B19,
4G:TDD:B34/B38/B39/B40/B41,4G FDD:B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28(A+8)/B66/B71
5.Four Cameras: Front 20Mpxls camera, Back 64MP+20MP(Night vision camera)+2Mp Macro Cameras.
6.Memory & Storage: 12GB ram + 256GB ROM;
7.Wireless Network:802.11 a/b/g/n/ac 2.4G+5G Dual-band wifi wireless and Blutooth 5.0;
8.GPS:Support GPS and GLONASS+Beidou;
9.Battery: 3.85 V/9800mAh Lithium Battery;
10.Tri-Proof Rate: IP68 Waterproof and dustproof, DropProof Rate: GIL-STD-810G.
11.Sensors:G-sensor,Light sensor,Proximity sensor,E-Compass, Gyroscope Sensor,ect.;
12.Side Fingerprint & Face recognition unlock function: Support;
13.I/O Port: Type-C USB;
14.NFC: 13.56Mhz;
15.Dimension: 177.3*84.3*18.4mm.

1.CPU:Mediatek MTK6762 Octa-core 2.0GHz;
2.Operation System: Android 13 with google service;
3.Display: 6.08 inch Capacitive Multi-touch screen,IPS HD+1560*720 Pixels;
4.4G LTE Networks: Support 2G GSM: B5/B3/B8/B2,3G WCDMA:B1/B8,
TDD LTE: B38/B40/B41,FDD LTE:B1/B3/B5/B7/B8/B20/B28A;
5.Two Cameras: Front 20Mpxls camera, Back 20Mpxls Camera.
6.Memory & Storage: 4GB ram + 128GB ROM,or 6GB+128GB is optional;
7.Wireless Network:802.11 a/b/g/n 2.4G+5Ghz wifi wireless and Blutooth 5.0;
8.GPS:Support GPS+GLONASS or GPS+Beidou;
9.Battery: 3.8V/5000mAh Lithium Battery;
10.Rugged Durability: IP68 Waterproof and dustproof, DropProof Rate: MIL-STD-810G.
11.Fingerprint sensor:Support unlock;
12.NFC: 13.56Mhz,Support ISO14443A/B/15693;
13.PTT function: support;
14.SOS function: support;
15.Explosion-proof: II 2G Ex ib IIB T4 Gb, ATEX Cert.:ECM22 ATEXB DD57;
16.Dimension: 159.2*76.3*13.1mm.

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IP 7000, SoundStation Duo, Nortel,
Norstar, VTX 1000, Avaya,
SoundStation 2W Wireless
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M3901, M3905, KBA
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Plantronics wireless phone headsets

KTH17B
Max input DC voltage DC52V
Max input circuit Current DC 65mA
Feed voltage DC48V
Bell ringing voltage DC24-48V
Net Weight (kg) 1.65kg
Size (mm) 285mmÃ?175mmÃ?135mm
Communication Distance â?¤5km,model: MHYV1*2*7/0.37
Belling Grade â?¥80dB
Material ABS
Protection Level IP54
Installation Wall Mounting/ desk top
Link coupler KTA16B safe coupler, connect to 10 phones
Dial model DTMF
Function Explosion proof /waterproof/ anti-dust /anti-corrosion

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Model KTH15
Max input DC voltage DC66V
Max input circuit Current 60mA
Max input bell stream voltage 105v
Max input bell stream circuit current 120mA
Weight (kg) 3.8kg
Communication Distance â?¤10km,model: MHYV1*2*7/0.37
Bell ringing level â?¥95dB
Material ABS
Protection Level IP65
Installation Wall Mounting/Table
Linker coupler KTA12 coupler
T/P Way Tone and Pulse
Function Explosion proof /waterproof/ anti noise

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1. Match light are multiplexed lines. 800Hz telephone impedance is 800Ω ± 20%.
2 .Through two telephones on the same model, in less than 75db audio noise conditions, the communication distance up to 21 km.
3. In temperature -40 â?? (using cold battery) - +50 â?? 750 ± 30mm Hg pressure and temperature of +40 â??, relative humidity up to 98% of the reliable work environment.
4. All parts are fixed on the rack into one, along with mobile phones are loaded into the enclosure, solid structure to carry and easy to use.
5. Volume : 222*195*107mm3 ã??
6. Weight : about2.5Kg

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Type/ Specification Rated Voltage (V) Rated Current (A) Max Analysis Capability(KA)
(conΦ=0.35) Electrical Life(times) Mechanical Life (times) Overall Size

LÃ?WÃ?H Weight (kg)
1140V 660V
KBZ-500/ 1140(660) 1140 500 9 12.5 3000 15000 950Ã?583Ã?982 500
KBZ-630/ 1140 660 600 12.5 15 3000 15000
KBZ-200/ 1140(660) 1140 200 4.5 7.5 3000 15000 791Ã?531Ã?836 320
KBZ-400/ 1140 660 400 7.5 9 3000 15000
KBZ9-200/ 1140(660) 1140 200 4.5 7.5 3000 15000 605Ã?493Ã?826 160
KBZ9-400/1140 660 400 7.5 9 3000 15000

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Product: NEC Office Desk Phone

Condition: Used, good condition

Features:

Model: NEC Desk Phone dle (6d)z(bk)

Display screen for caller ID and call details

Function buttons: Recall, Redial, Conf, Answer, Mic, Directory, and Message

Numeric keypad for dialing

Special buttons: Hold, Transfer, Speaker

Compact design with an ergonomic handset and sturdy build

Ideal for office or home use


Notes:

Great for anyone setting up or enhancing an office phone system

Tested and in working order

Shows minor signs of wear on surface



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Feel free to adjust the description based on the model number if you have it or any additional specific features.