HD-KL-2 Switch Useful Life Tester Product explanation: This machine is designed and manufactured to meet the requirements of GB14048 and UL1054.This machine is used to test the useful life of switch. It can be connected with a loading machine to perform a loading test. Features: * This machine has three working units. * Test times can be set in advance, and test times for each working units are set together. * When test failed, this machine will alarm. OPTION: HD-40D Loading machine. Technical parameter: Power source: AC 220V 50Hz Input current: AC 3A Counter: 0~999900times Using temperature: 0~40C Using humidity: less than 85% Exterior dimensions: 800mm W, 580mm D, 500mm H