... signal, accident signal and other signals. Our products comply with GB/T14048.5 and IEC60947-5-1, all products are ... with CE, CCC and UL certificate and parts of international ... ;2500V AC,1min Contact resistance:≤50mΩMechanical durability:momentary 1000000,others 250000Electrical durability:500000Degree of protection:IP40(Button case IP65) pushbutton switch