IR photo gate to delay timer.

[dbalfour]

Hey there I am connecting a IR photo gate kit to a delay timer made on a breadboard.

The output of the IR photo gate is a PCB 3-way Terminal block with markings NO/OM/NC (left to right) and I am not quite sure of where to connect these wires to my delay timer kit.

Can someone give me any tips becuase whenever I search on google for PCB terminal blocks its only sales on them and nothing to do with how to use them or connect them.

[pebe]

The terminals are probably the output of a relay.

The centre contact should probably have said 'COM' - not 'OM', ie. the common terminal. NO would be the normally open contact and NC the normally closed contact