Normally Open: when the on-off switch is not pressed,the on-off power supply is in working state when the power supply is not pressed,and when the on-off switch is loosened,the on-off power supply is not connected. Normal Closure: Push-release is not on time when the power supply has been in working state,press when the disconnection is not on,stop work,loosen and in continuous work. ProductSiteLaunchDate : 2021-11-08T08:04:28.564Z Size : Press off-NC SpecificationMet : CCC SupplierDeclaredDgHzRegulation : not_applicable SwitchType : Push Button TerminalType : Screw UnitCount : 1 UnspscCode : 39122200