Description: Average power dissipation 0.5wCurrent rating 4aTRIAC type sensitive gateVoltage rated 600vIGT 25ma This simple triac dimmer can be used to control incandescent filament lamps up to 200W. The circuit operates on the phase-control principle.This light dimmer is directly connected to mains. So be careful. TRIAC:TRIAC (BT136)Integrated Circuit:IC1 MOC3021 (OPTO-COUPLER)Miscellaneous;220v bulb as load, PCB or Breadboard, Flexible Wire, Soldering rod etc.