... and performance JZ871 RF Modules,GFSK,433MHZ,100MW,TTL/RS232/RS485,1000m range,Features: 1. GFSK, Within the ... +2.8V---+3.3V or +3.6V---+5.5V, RS232/RS485: DC +4.5V---+5.5V; 9. Working temperature: -25oC---+85oC; 10. ... without condensation) 11Antenna impedance:50 12Power supply+5V 13Dimension44mm×27mm×8mm 14InterfaceTTL, RS232, RS485user can choose15Reliable transmit distance1000m Features:1 ...