Export type-Wireless expansion adapter LORA

Communication distance: 3KM, 6KM, 9KM
Carrier frequency: 433Mhz (LORA)
Transmit power: 20dBm
Communication interface: RS232/RS485
Working temperature: -40℃ to 80℃
Working humidity: 5% to 95%RH
Whole machine weight: ≤190g