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Item specifics
  • Brand Name: G-NiceRF
  • Model Number: SNR651
  • Operating voltage range: 2.8~6.5V (TTL) 4.5~5.5V(232/485)
  • Reveive current: 25mA @ TTL / 32.7mA @ 232 / 34mA @ 485
  • Emission current: 350mA @ 27dBm
  • Sleep current: 5uA
  • Interface type: TTL/ 232/ 485
  • Transmit power range: 200mW
  • Receiving sensitivity: -121dBm
  • Size: 50.4*39*7.6
  • Operating Temperature Range: 2.8~6.5V (TTL) 4.5~5.5V(232/485)
Product Description


2pcs/pack  SNR651 868MHz RS485 Interface Embedded  Multi-ports Network Node Module for Wireless Networking Data Transmission


SNR651 is highly-integrated RF module, which adopts high performance Si4432 from Silicon Labs. It has 3 optional Interface (TTL, 232, 485). SNR651 has high sensitivity and 500mW output power to achieve long RF range and reliable RF communication. SNR651 comes with many parameters which are configurable, such as:  frequency, data rate, output power, Net ID, Node ID. Users can configure the parameters through PC or customer’s own device. The features of long distance, wide working voltage and simple parameters configuration make SNR651 wildly used in many fields.




433/470/868/915 MHz (Customizable 240-930 MHZ)
Interface:  TTL/RS232/RS485 ( Optional )
40 channels
4 bytes net ID
2 bytes node ID
Multiple air data rate
GFSK modulation
Bi-Direction communication 
Parameters configurable
Parameters saved even powered off
Sensitivity: -121 dBm 
Max output power:500 mW  
Voltage:2.8 ~ 6.0 V / TTL
Voltage:4.5 ~5.5 V / 232,485
Temperature:-40 ~ +85 °C



Remote telemetry             
Auto meter reading 
Security systems   
Data logger   
Wireless data communication 
Home automation 
Healthy monitor 
Wireless PC peripherals 
Access Control 
Robot control 


Electrical Specifications


Machanism dimensions


Machanism dimensions



Product Show:


SNR651-RF Data Transmission module kit-8

SNR651-RF Data Transmission module kit-7

SNR651-Embedded multi-ports network node module

SNR651-Embedded multi-ports network node module-2



What is in the box:

2pcs SNR651 modules In 868MHz RS485 Interface

2pcs Rubber antennas             

2pcs RS485 USB bridge board


Pin Configuration



Pin Configuration




USB Bridge Board



Packing and delivery:


Packaging Details
  • Unit Type: lot (2 pieces/lot)
  • Package Weight: 0.5kg (1.10lb.)
  • Package Size: 13cm x 9cm x 8cm (5.12in x 3.54in x 3.15in)
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Packaging Details
  • Unit Type: lot (2 pieces/lot)
  • Package Weight: 0.5kg (1.10lb.)
  • Package Size: 13cm x 9cm x 8cm (5.12in x 3.54in x 3.15in)
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