Feature
If you are looking for a device to power up your home application using microcontroller such as arduino/stm, relay is a best solution for this scenario. This relay module support 1 channel which mean you can connect up to 1 electrical appliaction inside your home, office or industrial. The module is driven by optocoupler where it provide an isolation ground between your microcontroller and relay. If there are electrical break down (such as power surge), you microcontroller can be save from the break down.
Specification
Package content
1 x 2 channel relay with optocoupler