SR-FRS-2WUS 400MHz-470MHz 2W UHF Analog walkie talkie module

The SR_FRS_2WUS is a low cost but high performance integrated walkit talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface,it can be easily used and succeed in all the walkie talkie function with good quality voice and long distance transmission. Users only need to connect external audio amplifiers, microphone or speaker with this module ,then it can work as a small walkie talkie with 2W output . In open area, it can come to performance of 9Km communication. Simplified interface and ultra small size make this module into a wide range of applications, also can conveniently embed into various handheld devices,to improve the comprehensive performance of end products.

Besides the  excellent voice intercom, The more important feature is this module has  the data/SMS transfer ability;  up to 70 byte can be sent at one time;  it  is compliance  with the standard UART transfer protocol;  

Features

FM demodulation technique Based on digital signal processing technology；

Frequency Range：UHF 400M～470MHZ；

Frequency step：5K/6.25K/12.5K/25K；

RF Output Power： 2W/1W/0.5W

voice encryption (scrambling): 8 type.

Voice Compression- Expansion ；

SMS Receive /Transformer，The space Baut : 1200；

CTCSS（38 group）+ CDCSS（83 group） ；

Automatic elimination tail ；

Volume adjustable（1-8）；

Vox level adjustable（0-8）；

SQ level adjustable（0-9）；

MIC sensitivity level adjustable（1-8）

The ultra low power dissipation in Sleep Mode（0.1uA）;

Power supply ：DC 3.3～5.0V

Ultra small size：17*28.5*3.0mm

Communication distance：more than 9 KM in open area .

Applications： 

portable intercom and paging systems；

wireless data transmission；

mobile phones and other  embedded in radio  functions  product 。

Portable walkie-talkie,

Outdoor sports equipment,

Building security,

Audio monitor system

Module pin assignment description

Typical application Block diagram