Go Direct* Photogate, double-gate sensor that includes two photogates built into the arms of the sensor, which accurately measures velocity and acceleration, Infrared source: Peak at 880 nm, Gate width: 77.5 mm, Battery: 300 mAh Li-Poly Rechargeable
Go Direct* Sensor Cart, Yellow, for College, High School, and Middle School Science, features built-in, wireless sensors for one-dimensional dynamics and kinematics experiments, directly connects wirelessly via Bluetooth, Position resolution: 0.25 mm
Go* motion detector that connects directly to a computers USB port-eliminating the need for an additional data-collection interface, teacher package, used to collect position, velocity and acceleration data of moving objects