1) RoHS, mental, plane /arc button, normal close ,when push open;ON-OFF ... 2A,12VDC;T125,5E4; Anti-vandal metal Button Switch 12mm,16mm,19mm in diameter : 1, plane & Arc buttons;2, ON- ... -on;3,normal close, when push open;4,ecifications :1)Contact Resistance ≤20mΩ 2)Insulation Resistance ≥100MΩ ,at ... electromotional instruments field etc. Anti-vandal metal Button Switch 12mm,16mm,19mm in diameter