The Kinetic Energy Tester is used to test related materials from the launch of the toys and toys from the launch of a non-exclusive material that may be caused by the ejection of some, but not all of the potential risk of accidents. Complies to standards£ºASTM: F963-03 EN-71-03 Main Technical Parameter Power Supply: AC 220V/ Single phase, 50 HZ Max time: 15.000000S Display range: 0.000001--15.000000S Speed display range: 0.007M/S¡ª10000.000M/S. Input channels: Internal /external channels (external channel is optional) The distance between front sensor and rear sensor: 100mm, tolerance 0.1mm Keys: internal / external channels, reset keys. Standard export package.