This trigger operates the reverse of our photogate kits. The output of the light-activated trigger is switched on when light shines on the detector. A laser pointer works particularly well as a light source, since the phototransistor is sensitive to visible light and has a narrow angle of view. The LAT includes 6 feet of 2-conductor cable. This can be cut into two lengths in order to connect the output to a flash unit and also to move the photo transistor to a location away from the breadboard.

An electronic delay unit may be used with the LAT to achieve timing synchronization. You receive a $1.00 discount when purchasing a LAT trigger with a delay unit.

When purchasing a LAT kit with a breadboard, there is a $1.00 savings over buying a kit and breadboard separately.