This power module has inbuilt relay and drive transistor BC547.
On board there is 7805 5v regulator.
You can provide power adapter like 12v 1amp to the DC socket.
Berg pins are extended with 12v, 5v,Gnd and Input.
This enables easy connection of a sensor.For e.g you can connect a PIR sensor with 5v and Gnd.Signal pin of sensor can be connected to I/P pin of module.When the PIR senses motion , the relay will be ON.
This module supports different sensors like PIR, IR, Flame,Sound , etc..
1CH Relay with power
₹150.00Price