... 14InterfaceTTL, RS232, RS485user can choose15Reliable transmit distance1-3Km Features:1. Low Power consumption and receiving sensitivity Transmission power <0 ... the other operations automatically, such as transmission/receiving conversion in the air, control, etc.10. High reliability, small and light ... RF 433/868/915MHz Module | Data Transceiver JZ877 for remote control and industrial,wireless adapter