DRF7020D13 is 13dBm low power transceiver module based on ADF7020 RFIC so it has excellent anti-voltage ripple ability. The module can be configured to work in different channels with 200k Hz space. It adopts high efficient looped interleaving EDAC (Error Detection and correction) coding with coding gain up to 3dB which keeps in advance in EDAC and coding efficiency over normal FEC (Forward Error Correction). Because of its high reliability in correction modules can filter error and fake information automatically and realize truly transparent wireless link which makes DRF7020D13 very suitable in the rigid communication environment. With working voltage 3.4~5.5Vit covers the applications in which DRF1212D10 can't work. DRF7020D13 DRF7020D20 and DRF7020D27 modules use the same chip and data format so they can communicate with each other at default settings. The DRF7020D13 module is very easy to use and can communicate with Arduino or Picaxe platform. The modules can work well with default parameters. Users also can change the default parameters such as RF output power RF dat rate UART rate and parity check by microcontroller or by computer through USB-to-TTL converter board DAC02.