Sonoff DEV: Sonoff IoT WiFi Development Board

Sonoff DEV is a universal low-cost WiFi development board designed by ITEAD. A lot of Sonoff fans keep asking firmware programming questions, now this version is just the module you are looking for. With only one micro USB cable to connect to PC, users can start to develop and design IoT device right away. Sonoff DEV supports to program personal firmware! The core processor of this board is ESP8266.