Industrial grade RS232/485/422 serial port to LoRa wireless adapter. Support up to 65535 nodes wireless networking communication; 433MHz wireless frequency; Strong penetration of wireless communication; Transmission distance of 10km in open areas; Penetrate 15 floors indoor; Can be extended by relay; Serial port Baud rate: 1200bps-115200bps; Air rate: 2.4Kbps-62.5Kbps, settable; 9-40VDC wide voltage power supply; Working temperature: -40℃-+85℃; Dustproof and waterproof field mounting.