RFM02 wireless FSK transmitter module

RFM02 wireless FSK transmitter module

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Other pin/package combinations may be available.

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RFM02 is a low costing ISM band FSK transmitter module implemented with unique PLL approach. It works with FSK modulated signal ranges From 433/868/915MHZ bands, comply with FCC, ETSI regulation. The SPI interface is used to communicate with microcontroller for parameter setting. RFM02 works with receiver module, At 433MHZ band, the pair of module can work up to 300m in the free open air.



  • low costing, high performance and price ratio
  • tuning free during production
  • FSK or ASK reception
  • PLL employed
  • fast PLL lock time
  • high resolution PLL with 2.5KHz step
  • programable frequcnecy deviation(£Ærom 30kHz to 240kHz,step 30kHz)
  • programable output power
  • high data rate (up to 115.2 kbps with FSK modulation with ASK modulation highest data rate is 256 kbps)
  • differential antenna output
  • automatic antenna tuning
  • SPI interface
  • clock and reset signal output for external MCU use
  • 10MHz crystal for PLL referencement
  • programmable crastal load capacitor bank
  • wakeup timer
  • low battery detection
  • 2.2V - 5.4V power supply
  • low power consumption
  • stand by current less than 0.3µA


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