I need to put some sort of sensor across a garage. The purpose of this sensor is to indicate when the car has passed the sensor. What I want is when the car "breaks" the beam, a light comes on. When the car has passed and the beam is restored, the light goes off.
I found the sensor below on ebay and I wondered if I can use this sensor, with a few modifications, for my purpose.
Do I need a battery with this sort of sensor? I hope I've made myself clear. Thanks.
I found the sensor below on ebay and I wondered if I can use this sensor, with a few modifications, for my purpose.
Do I need a battery with this sort of sensor? I hope I've made myself clear. Thanks.