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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

Pls Leave a massage to confirm what frequency and interface you need, our default shipping specifications is 433MHz TTL interface.



2sets SNR651 433MHz TTL Interface 3km Distance Range 27dBm Network Node Module|500mW 470/868/915mhz RF Transmitter And Receiver


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 433MHz TTL Interface

2pcs Antennas                        

2pcs TTL USB bridge board 


Pin Configuration



Pin Configuration




USB Bridge Board



Payment details

We accept: VISA, MasterCard, Escrow

Packaging & Shipping

  1. Packaging: All sample packed in Yellow carton
  2. Shipping: Free shipping by China Post Registered Air Mail,If you need fast shipping like DHL,FEDEX,ARAMAX,EMS, Pls contact with seller or email Items will be shipped within 3~5 days after we receive the full payment.
  • We do not guarantee delivery time on all international shipments due to differences in customs clearing times in individual countries, which may affect how quickly your product is inspected.
  • If you do not receive item within 60 working days (10 weeks), please contact us to investigate the case.
  • Please note that buyers are responsible for all additional customs fees, brokerage fees, duties, and taxes for importation into your country. 
  • These additional fees may be collected at time of delivery. We will not refund shipping charges for refused shipments




Company Information

We are a technology leading company, who has combined R&D, produce and sales. Our company focused on the application development of RF and sensor module, devoted to provide the most excellent performance RF and integrated digital sensor module to our customers. Meanwhile, we can customize the RF and sensor class ODM project as well.

Our services
  1. We appreciate your order and and we do our best to serve you.
  2. We offer an instant 7 days return policy (7 days after we receive the items).
  3. The returned item has to be in its original condition.
  4. We are able to refund your money without shipping cost.


  1. Your satisfaction and positive feedback are appreciated. Please leave positive feedback and 5 stars if you are satisfied with our items and services.
  2. If you have any problems with our items or services, please feel free to contact us first before you leave negative feedback.
  3. We will do our best to solve any problems and provide you with the best customer services.
  4. For any question, pls feel free to contact us by  email or via  TradeManager.


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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