2KM Long Range RF link kits w/ encoder and decoder


This is a super long-range 433mhz RF link kit. It comes with VCO, PLL technology, steady frequency and super anti-jamming ability. You can directly use it with your projects, like wireless data transport, remote control, etc.

Application Ideas

  • Wireless switch
  • Remote transmission
  • Wireless control



Key Specifications

Working voltageReceiver(3-5V), Transmitter(3-9V)
Working current≤2.5mA(5.0VDC)
principle of operationSuperhet(VCO, PLL)
Working band433.92MHz (customized service available)
Sensitivity-105dBm (50Ω)
Decoding formPT2272
Antenna length18cm
Transmission range2 km


Hardware connection Manual, RX(D0/D1/D2/D3) output voltage depends on the input voltage (VDD).
Note: Do not put RX module and TX module too close: this would prevent them to work. Make sure that the RX module and TX module are at least 1 meter away from each other.


Help us make it better

Thank you for choosing Seeed. A couple of months ago we initiated a project to improve our documentation system. What you are looking at now is the first edition of the new documentation system. Comparing to the old one, here is the progresses that we made:
  • Replaced the old documentation system with a new one that was developed from Mkdocs, a more widely used and cooler tool to develop documentation system.
  • Integrated the documentation system with our official website, now you can go to Bazaar and other section like Forum and Community more conveniently.
  • Reviewed and rewrote documents for hundreds of products for the system’s first edition, and will continue migrate documents from old wiki to the new one.
An easy-to-use instruction is as important as the product itself. We are expecting this new system will improve your experience when using Seeed’s products. However since this is the first edition, there are still many things need to improve, if you have any suggestions or findings, you are most welcome to submit the amended version as our contributor or give us suggestions in the survey below, Please don’t forget to leave your email address so that we can reply.
Happy hacking