This is a LoRa 433MHZ SX1278 SX1276 Wireless Transmitter and Receiver RF Module. E32-433T30D UART is a 1W wireless transceiver module with LoRa spread-spectrum technology and has a long-range of 8000m, operates at 410~441MHz (Default: 433MHz), based on originally imported RFIC SX1278 & SX1276 from SEMTECH, transparent transmission is available, TTL level.
