Дуплексный беспроводной голосовой звонок RETEVIS RT57 система двусторонней связи для

Дуплексный беспроводной голосовой звонок RETEVIS RT57 система двусторонней связи для

Hot Spot:

There is no need to wire or change current decoration. Reception is stable and performance reliable. With up-to-date digital encoding and decoding technology, every system owns its unique code that ensures there is no error between calling system.

Two-way communication but ordinary business beepers only establish communication between master station and extended set. Our new model is designed to satisfy prevailing market demand that an extension could not only communicate freely to master station but also to other extensions. A phone set as the terminal could be turned into the master for the group call as well as an extension for the reception of signals from other extension terminal. It is able to be used for one-to-one calling and also one-to-many communications.

It could be connected to a wakietalkie for voice call.

Feature:

1. Interconnection between 99 devices

2. Two-way communication 

3. Making Announcement or one-way conference function 

4. Incoming call display

5. Call tone for manual communication 

6. Call tone for automatic communication 

7.  Backlight LCD 

8.  5 selectable call tones  

9. 10 selectable channels

10. Calling walkie-talkie

Technical specification:

Weight

365g

Dimension

160*150*60mm

Channels

10

Frequency Range

UHF

Channel Spacing

25KHz

Working Mode

Duplex Mode on Two Frequencies

Modulation

FSK

Antenna Impedance

50Ω

Operating Voltage

7--9V

Operating temperature

- 20--+55℃

Operating current

< 600 mA

Standby current

60mA

Spurious emission

< -60 dB

Output Power

0.5 W

Channel Stability

±5 ppm

Modulation Sensitivity

2--20 mA

Available Sensitivity

-110dBm

Threshold of Squelch Sensitivity

< 0.2uV

Deep Quieting Sensitivity

< 3uV

Standard Accessories:

1 x RT57 Wireless business Calling Device

1 x Antenna

1 x Power Adapter

1 x User Manual