... dome keypad 4 RoHS&ISO9001:2008& ISO14001:2004 tactile control panel switch Electronic characteristicsCircuit rating35V(DC),100mA,1 ... 60Hz/1 min)Life expectancyflat type≥500 million times,tactile type:≥1001 million timesMechanical PropertiesOperating pressureflat type 57-284g ( ... 2-10 Oz),tactile type 170-397g (6-14 Oz) Switch strokeflat ...