ESP8266 ESP-01S ESP01S Serial Wifi Sensor Wireless Module ESP-01 Wifi Module for SKR PRO SKR V1.4 Turbo 3D printer parts

Specifications Wireless standard 802 11 b g nFrequency range 2 4GHz 2 5GHz 2400M 2483 5M Data interface UART HSPI I2C I2S IR Remote Contorl GPIO PWMOperating voltage 3 0 3 6v Suggest 3 3v Working current average 80mAOperating temperature 40 degrees to 125 degreesStorage temperature room temperatureWireless network mode station softAP SoftAP stationSecurity mechanisms WPA WPA2Encryption type WEP TKIP AESUSB to serial TTL chip CH340GUpgrade firmware local serial port burn cloud upgrade host download burnNetwork protocols IPV4 TCP UDP HTTP FTPUser Configuration AT instruction set cloud server Android IOS APPNote 1 Due to the different monitor and light effect the actual color of the item might be slightly different from the color showed on the pictures Package Included 1 x wifi module