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

DWM22091202

SR-FRS-2WUS 400MHz-470MHz is 2W a low cost but high-performance integrated walkie talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface.

$7.00
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Description

The SR_FRS_2WUS is a low cost but high-performance integrated walkie 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 bytes 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 400MHz-470MHz.

Frequency step:5K/6.25K/12.5K/25K.

RF Output Power: 2W/1W/0.5W

Receive sensitivity: -122dbm

voice encryption (scrambling): 8 types.

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

Pin number

pin name

IO

Function description

1

SDA

Program only, user unused

2

CLK

Program only, user unused

3

I/O

Program only, user unused.

4

AF_OUT

OUT

Audio output

5

MIC

IN

Michone input

6

HML

IN

Transmit power selection:

GND: 0.5w

NC:  2W

1.5V: 1W (Un useful)

7

ANT

IN/OUT

 Antenna

8

GND

GND

GND

9

MIC_IN

IN

Microphone input.

10

B+

OUT

 Module power supply

11

VOX

OUT

1)  with VOX modeit is the VOX state indication.

0 Talk finished.

1 Talking.

2)  without VOXit is the transmitter state indication.

0 receive state

1 transmitter state

12

RXD

IN

UART_RXD

13

PTT

IN

PTT control

1Receive.

0Transmit

14

SQ

OUT

Squelch control

0: active

15

TXD

OUT

UART_TXD

16

PD

IN/OUT

Module power control:

1: Power on

0: Power off

17

VCC

+3V output

18

GND

GND

 

Typical application Block diagram

Typical application Block diagram

Product Details
DWM22091202
100 Items
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SR-FRS-2WUS 400MHz-470MHz 2W UHF Analog walkie talkie module

SR-FRS-2WUS 400MHz-470MHz is 2W a low cost but high-performance integrated walkie talkie module. With built-in high performance micro controller, narrow band rf transceiver and standard Uart interface.

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