ESP8266 is a WIFI Transceiver Module with ultra-low power consumption,User's physical device can be connected to the wi-fi wireless network for Internet or LAN communication and networking functions. It can be widely used in smart power grid, intelligent transportation, intelligent furniture, handheld equipment, industrial control and other fields. _x000D__x000D__x000D__x000D__x000D_Features: _x000D_Semi-hole chip technology, all the IO leads, with metal shielding shell _x000D_IPX external antenna, can also be built-in ceramic antenna. _x000D_Support wireless 802.11b /g/n standard _x000D_Supports three working modes: STA/AP/STA+AP _x000D_The built-in TCP/IP protocol stack supports multiple TCP Client connections _x000D_Supports rich Socket AT instructions _x000D_Supports UART/GPIO data communication interface _x000D_Supports Smart Link Smart networking _x000D_Supports remote firmware upgrade (OTA) _x000D_The built-in 32-bit MCU can double as application processor _x000D_Low energy consumption, suitable for battery power supply applications _x000D__x000D__x000D_Specification: _x000D__x000D_Module Model ESP8266-07 _x000D_Main chip_x000D_ESP8266 _x000D_Wireless parameters Wireless standards IEEE 802.11b/g/n _x000D__x000D__x000D_Frequency range _x000D__x000D_2.412GHz-2.484GHz _x000D_Transmission power 802.11b: +16 +/-2dBm (@11Mbps) _x000D_802.11g:+14 +/-2dBm (@54Mbps) _x000D_802.11n: +13 +/-2dBm (@HT20, MCS7) _x000D_Receiving sensitivity 802.11b: -93 dBm (@11Mbps ,CCK) _x000D_802.11g: -85dBm (@54Mbps,OFDM) _x000D_802.11n: -82dBm (@HT20, MCS7) _x000D__x000D__x000D_Antenna form_x000D_External: stamp port_x000D__x000D_External: I-PEX connector, SMA connector _x000D_Built-in: onboard PCB antenna _x000D_Hardware parameters Hardware interface UART,IIC,PWM,GPIO,ADC _x000D_Working voltage 3.3V _x000D_GPIO drive ability Max:15ma _x000D_Working current Keep sending=> _x000D_average:~70mA,peak value: 200mA _x000D_Normal mode=> _x000D_Average: ~12mA,peak value: 200mA _x000D_Standby: Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia