School Lab Light Gate Photo Timing Gate

For use as a light operated timing gate. 

Comprises photodetector and light source each housed in a robust ABS case spaced 40mm apart on a plastic rod. 

Light source housing has battery compartment and on/off switch. 

Consequently the timing gate can be used as a remote switching device in a wide range of dynamics experiments.

When the timing gate is switched on it creates a short circuit between the two output sockets, this then becomes an open circuit each time the light beam is interrupted.