einstein™ Sensors - Photogate

This general-purpose sensor is commonly used for a wide variety  of experiments such as studying the swing of a pendulum,  measuring the speed of a rolling object or measuring the speed of colliding objects. * Specs: * * -Range: 0 to 5 V * -Detector rise time: 180 ns * -Detector fall time: 180 ns * -Parallax error: For an object passing within 1 cm of the detector, with a velocity less than 10 m/s, the difference between the true and effective length is less than 1 mm  * -Infrared source: Peak at 800 nm