... .industrial control 3.good stability transceiver module 4.receive sensibility:-107dbm KST-RX820 two- ... it work transmit ,the Pilot lamp is red ,when it work receiver ,the pilot lamp is green2. when the frequency ... , such as air / receive switching, control operations, the module can be done automatically.10.low powerReceiver power is 30 ... , less external circuitry, high reliability. FSK transceiver module