Copyright 2012 unitech Electronics Co., Ltd. All rights reserved. Unitech is a registered trademark of unitech Electronics Co., Ltd.668.4. ReliabilityLife TimeTrigger Switch 1,000,000 timesMTBF(Calculated) 50,000 hoursThermal ShockHigh Temp. 60 oC (140 oF)Low Temp. -20 oC (-4 oF)Cycle time 20 minutes for high temp. , 20 minutes for low temp.Cycles 5 cyclesCable Bending Test 25,000 times/ minimum (30 times/ min @ 500g/ 90 o)Drop 59.06 inches (150cm) drop on Concrete SurfaceBeeper 90 db/ minimum