Great performance low power consumption; Supports UART/SPI/GPIO port; Supports smart link; Supports wireless and remote firmware upgrade; Supports WPS 5-CH TCP client; Supports soft switch control power; Certification: FCC CE; Wireless standard: 802.11 b/g/n; Frequency: 2.412~2.484GHz; Transmitting power: 802.11b: 16+/-2dBm (@11Mbps) 802.11g: +14 +/-2dBm (@54Mbps) 802.11n: +13 +/-2dBm (@HT20 MCS7); Receiving sensitivity: 802.11b: -93 dBm (@11Mbps CCK) 802.11g: -85dBm (@54Mbps OFDM) 802.11n: -82dBm (@HT20 MCS7); Antenna: External: I-PEX; Built-in: PCB; Working voltage: 2.8~3.6V; Working current: continuous surge: 200mA normal: 12mA surge: 200mA standby: <200uA; Working temperature: -45~125'C; Size: 23.1 x 32.8 x 2.7mm; Wireless type: STA / AP / STA+AP; Security: WEP/WPA-PSK/WPA2-PSK; Encryption: WEP64/WEP128/TKIP/AES; Internet protocol: IPv4 TCP/UDP/FTP/HTTP; User configuration: AT+ instruction set; Web: Android / IOS; Smart Link: APP.