This machine is designed and manufactured to meet the requirements of GB14048 and UL1054. This machine is used to test the useful life of rotary switch for appliance. It can be connected with a loading machine to perform a loading test. Features: * This machine have three working units. * Operated by touch-screen. * When test failed, this machine will alarm. OPTION: HD-RL-40D Loading machine. Technical parameter: Power source AC 220V 50Hz Input current AC 5A Output voltage AC 50~290V Output current AC 0~25A Counter 0~99999times Using temperature 0~40 centigrade degree Using humidity less than 85% Exterior dimensions 800mm W, 580mm D, 500mm H Standards: GB14048 UL1054 Test Objects: Rotary Switch