I. Introduction: 1, the test rig at high and low temperature (-40 ~ 120 ℃, 10 ~ 95% RH) to achieve a combination toggle switch, lift move, reset function to detect motion. Parameters can be set by software 2, the apparatus may be similar one to six durability test switch simultaneously. 3, each gear contacts on, off and with load performance test; 4, automatically determine the contact failure conditions, and can show which switch and contact problems; 5, set invalid contact pressure drop through the set drop value or number of failures to determine product test results and print test reports; two, to meet the standards: 1, QC / T 218-2002 "automotive combination switch on the steering column technical conditions." 2, QC / T 198-1995 "auto switch General technical conditions." 3, JB 3126-82 "auto switch General technical conditions." Third, the test parameters: a DC power supply: 0 ~ 30V adjustable, 0 ~ 50A adjustable. 2, 0 ~ 100mm adjustable toggle, press 0 ~ 20mm adjustable. Fourth, the test subjects: Automotive combination switch (include: turn signal switch, dimmer switch, wiper switch, cruise switch, washing switch, horn button switch, lighting switch assembly).