The device can be used as a speed regulator for a drill, a fan, a light controller, a regulator for the power of a soldering iron and other consumers powered by the 230V power supply. 
The scheme is implemented with triac and diac, which allows for two-period regulation with losses up to 3% and an efficiency of 97%. 
Adjustable power up to 800W. 
The Triac housing is not galvanically insulated. 
If the power of the consumer is greater than 100W, it is necessary to install a suitable heatsink to the triac. 
Board size - 37mm x 31mm. 

Attention !!! 
When installing and operating the device, observe all rules for safe, high voltage operation. 

This product is an assembled module. 

The appearance may differ from the one in the photo without changing the parameters of the product (This means that there may be a difference in the elements used (appearance, placement, color, shape or value)).