LoRa SX1278 433MHz RF Module RS232 RS485 Long Range 3KM 100mW Wireless Transceiver E32-DTU(433L20) 433MHz Transmitter Receiver LoRa SX1278 433MHz RF Module RS232 RS485 Long Range 3KM 100mW Wireless Transceiver E32-DTU(433L20) 433MHz Transmitter Receiver. Sale price : $19.09 Category : Phones & Telecommunications