smart switches

This smart home control board is built around the ESP32 microcontroller and manages 4 independent relay channels, each capable of switching AC/DC loads such as lights, fans, or appliances. Every relay can be controlled through two inputs working in parallel — a mobile app (via Wi-Fi/Bluetooth) and a physical wall switch — meaning either input can operate the relay independently and at any time, without needing to wait on the state of the other. This gives an instant, direct response whether the command comes from the app or the switch, since both control paths act simultaneously on the same relay circuit. The board's built-in Wi-Fi connectivity allows full remote access and control from a smartphone from anywhere, while the physical switches ensure reliable local control even without an internet connection. With 4 isolated relay channels, the board can manage multiple devices or circuits at once, and its optimized PCB layout ensures safe load handling, stable performance, and proper isolation between outputs — making it ideal for smart lighting systems, home automation panels, appliance control units, and general IoT home projects