ESP8266 Module WiFi Wireless Module Powerful With - Adapter For Networking
1 x Wi-Fi Wireless Module. The compatible board can directly connect to this module. Compatible with 5V/3.3V, and powerful internal LWIP protocol. Module size: 4.2 2.5cm/1.7 1in. Adapter size: 2.5 1.5cm/1 0.6in.