LoRa Long Range Wireless LoRawan Module 433MHz 868MHz 915MHz 433 868 915 MHz Ra-02 Ra 02 E32-433T20D E32-433T30D E32-900T20D E32-900T30D SEMTECH SX1276 SX1277 SX1278 SX1279 SX 1276 1277 1278 1279 Antenna Antena SMA IPX IPEX UART SPI Ebyte AI Thinker IOT