Circuit is equal to the supply voltage through a relay to switch the remote shutter release. Remote to switch the camera to capture objects moving through the beam.
The circuit will pay an equal pressure distribution over the face touching the relay to a remote shutter release thotwit to the thotwit order, a camera, shoot the object moves through beam.
Circuit voltage will be paid as much as the source via a relay contact to the remote shutter switch out loud so that the remote control switch camera order to take a picture through a beam moving objects.