Features: Brand new and high quality ESP8266 provides practicability at the lowest cost and provides possibilities for embedding wireless functions into other system. ESP8266, the processor of the development board, integrates the industry-leading L 106 low power 32-bit in a small package, with a 16-bit, main frequency supporting 80MHz and 160MHz Support standard protocol. Users can use this module to add networking functions to existing devices, build independent networking controllers. Deep sleeps holding current is 10uA, and current is less than 5uA2ms to wakes up, connect and transmit data packets. Support SmartConfig/AirKiss- key distribution networking support secondary development, and power consumption in state is less than 1.0mw(DTIM3). Specifications: Material:Plastic Size:Approx.48x25mm/1.88x0.98inch Package Includes: 3x Development Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.