Using the photosensitive resistance to induce the intensity of the light, with the relay, the direct control of the load
Adjust potentiometer sensitivity, adjust the potentiometer to set the threshold of start relay. When the value is up to this threshold, the module relay will pull together, and the relay will be cut off when it is dark.
Working voltage 12V
Output form: load directly from AC 220V 10A or DC30V 10A
There are 4 fixed bolt holes for easy installation.
Small size: 5cm x 2.6cm PCB
Using a wide voltage LM393 comparator