This IEC PHOTOGATE KIT contains 2 x universal Photo Gates with all the cables and plugs required for connecting them to the recommended optional digital timer (LB4064-101), although several types of IEC Timers perform well.
Photogates can be used on tracks either with or without a Sub Base.
A Photogate is a device that supports a small light source in line with a small light sensitive cell. A space between them permits a moving object to pass and break the light beam. On the Air Track, the Photogate sits directly on the track and permits a glider with a ‘flag’ taped to the side pass through the light beam.
The Gates are supplied with special legs that can be pushed firmly into the sides of the Gates to permit them to engage firmly to the outer corners of the normal triangular Air Track so the Gates become integral with the Track and can be slid along the track to any position.

See the PDF file for all information and details.

Instruction Sheet