RETEVIS RT57 Wireless Business Calling Device Wireless Intercom System(Black)

$94.52 USD
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1. No need to wire or change the current decoration. Stable reception and reliable performance. With the help of digital encoding and decoding technology, each system has its own unique code to ensure that there is no error between the calling systems
2. Two-way communication, but the ordinary business buzzer only establishes communication between the master station and the extended set. That is, the extension can communicate freely not only with the master station, but also with other extensions. The phone set as a terminal can be converted to a host for group calls, or it can be converted to an extension that receives signals from other extension terminals. It can be used for one-to-one calls and one-to-many communications.
3. It can be connected to wakie walkie talkie for voice calls
4. Function: interconnection between 99 devices, two-way communication, announcement or one-way conference, caller ID, call prompt tone, automatic call tone communication, backlit LCD screen, call intercom, etc.
5. Channel: 10
6. Frequency range: UHF
7. Channel spacing: 25KHz
8. Modulation: FSK
9. Antenna impedance: 50 ohms
10. Working voltage: 7-9V
11. Working temperature: -20 to 55 degrees Celsius
12. Working current: less than 600 mA
13. Standby current: 60mA
14. Spurious emission: less than -60 dB
15. Output power: 0.5 W
16. Channel stability: +/-5 ppm
17. Modulation sensitivity: 2--20 mA
18. Usable sensitivity: -110dBm
19. Size: 160x150x60mm
20. Weight: 365g


Specification:
General
Model RT57
Frequency Stability 5ppm
Frequency Step 25kHz
Antenna Impedance 50 ohms
Modulation FSK
Sensitivity -110dBm
Size 160x150x60mm
Weight 365g
Transmitter Parameters
Spurious Emission <-60dB
Modulation Sensitivity 2--20 mA
Package Weight
One Package Weight 0.66kgs / 1.46lb
One Package Size 23.5cm * 23.5cm * 7cm / 9.25inch * 9.25inch * 2.76inch
Qty per Carton 4
Carton Weight 2.97kgs / 6.55lb
Carton Size 31cm * 25cm * 27cm / 12.2inch * 9.84inch * 10.63inch
Loading Container 20GP: 1274 cartons * 4 pcs = 5096 pcs
40HQ: 2958 cartons * 4 pcs = 11832 pcs

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