electrolight ESP8266 ESP-01S 5V WiFi Relay Module Things Smart Home Remote Control Switch Phone APP ESP01 ESP-01 Wireless WIFI Module Multipurpose Controller

Product parameters: Product size: 45 * 28mm Operating voltage: DC5V Communication: WIFI (ESP8266 module) Serial communication parameters: 9600,8,1,0,0 Transmission distance: the maximum transmission distance of 400m (open environment, mobile phone equipped with WIFI module) Load: 10A/250VAC 10A/30VDC.Way of working: Mobile phone equipped with WiFi module; Mobile phone and WiFI module equipped with the same router, through the mobile phone APP to control the relay; this mode, the transmission distance depends on the signal router, more information see online video related with this.