Features: _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_ 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_ Wireless Standard: 802.11b/g/n_x000D_ Frequency Range: 2.4GHz-2.5GHz(2400M-2483.5M)_x000D_ Data Interface: UART/HSPI/I2C/I2S/Ir Remote Control/GPIO/PWM_x000D_ Operating Voltage: 3.0-3.6V(We recommended 3.3V)_x000D_ Operating Current: Average 80mA_x000D_ Operating Temperature: -40~125℃_x000D_ Wireless Network Mode: station/softAP/SoftAP+station_x000D_ Safety Mode: WPA/WPA2_x000D_ Encryption Type: WEP/TKIP/AES_x000D_ Network Protocol: IPV4,TCP/UDP/HTTP/FTP _x000D_ Size: 2.5*1.5cm/1*0.6in _x000D_ Weight: Approx.4g/0.1oz _x000D_ _x000D_ _x000D_ Package list: _x000D_ 1 x ESP8266 ESP-01S Module 1、Support wireless 802.11b /g/n standard 2、Supports three working modes: STA/AP/STA+AP 3、The built-in TCP/IP protocol stack supports multiple TCP Client connections 4、Supports rich Socket AT instructions 5、Supports UART/GPIO data communication interface