This WiFi IoT ESP01 Contact Relay module based and do control on the ESP-01 ESP8266 microcontroller WIFI module. It is designed for smart homes, the Internet of thing and DIY projects. With this ESP01 Contact Relay, you will easy to DIY your smart switch to control any device by phone, voice assistant, or another device through the internet.
The power DC 3.3V with low consumption ~ 150mA Also can connect the wall switch or button for external function. This module can control any AC and DC load for MAX 10A 240V.
Connection 1 line module:
Relay = ESP01 - GPI/O0 (HIGH - ON)