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SR110U-UHF 400MHz-480MHz wireless voice and data transmission module

DWM23070503

SR110U-UHF is a enhance version of the SR-FRS-1WU is wireless voice and data transmission walkie talkie module which built-in with a high performance radio frequency transceiver chip, microcontroller and radio frequency power amplifier.

$7.50
Quantity

Description

SR110U-UHF is a wireless voice transceiver and data transmission module with an extremely high cost performance ratio. It is built-in with a high performance radio frequency transceiver chip, microcontroller and radio frequency power amplifier. The external controller can set the working parameters of the module and control the entire module's transmission and reception through the standard asynchronous serial interface (RS232) communication. The module only needs an external antenna, MIC and voice power amplifier to form a complete two-way radio or data transceiver. 

Features:

FM modulation and demodulation technology based on digital signal processing;

• Frequency range:400MHz-480MHz

• Selectable  frequency steps: 5K/6.25K/12.5K/25K;

• RF output power: High power 1W, Low power 0.5W

• Voice encryption (scrambling) function: (8 modes optional)    

• SMS receiving and sending function: Air rate 1200bps;

• Serial communication: 9600bps;

• Built-in CTCSS (38 groups), CDCSS (83 groups) encoding and decoding, support positive and negative phases

• DTMF encode and decode function (contact us for customization if needed)  

• RSSI receives signal strength reading function    

• Auto tail cut-off function;

• Busy channel lockout function (BCLO);

• Adjustable digital volume (1-9 levels);

• Adjustable hands-free talk function with voice control (0-8 levels); 

• Adjustable noise suppression level (0-9 levels);

• MIC sensitivity software adjustable (1-8 levels)

• High receiving sensitivity:-122dBm;

• Ultra low power hibernation mode (0.1uA);

• Voltage working range:3.3~5.0V, recommended working voltage range 3.5V-4.2V

• Tiny size:18*35*3.2MM;

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

J1 pin name

Pin number

Function description

SQ

1

Squelch control

0: active

VOX_DET

2

1)  with VOX mode,it is the VOX state indication;

0: Talk finished;

1: Talking;

2)  without VOX,it is the transmitter state indication;

0: receive state

1: transmitter state

 

AF_OUT

3

Audio output

MIC1(NC)

4

NC

PTT

5

PTT control

1:Receive;

0:Transmit

PD

6

Sleep control,

0: into sleep state

1: Running

 

H/L

7

RF transmit power selection;

0: 0.5W;

NC: 1W;

Note: if you want a 1w power ,just leave this pin NC, it can’t be pull high.

BAT

8

Power supply: DC 3.3V -  5V

GND

9

GND

GND

10

GND

NC

11

NC

ANT

12

Rf Antenna input;

NC

13

NC

NC

14

NC

NC

15

NC

RXD

16

UART - Rxd

TXD

17

UART - Txd

MIC_IN

18

Microphone input;

 

 

Typical application Block diagram    

 See the pictures.

Useful Link:

AT Command for UHF/VHF Walkie Talkie radio module

Product Details
DWM23070503
287 Items
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Reference: DWM23051301

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SR110U-UHF 400MHz-480MHz wireless voice and data transmission module

SR110U-UHF is a enhance version of the SR-FRS-1WU is wireless voice and data transmission walkie talkie module which built-in with a high performance radio frequency transceiver chip, microcontroller and radio frequency power amplifier.

Write your review

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