... Momentary On-off,On-off-on,on-on with waterproof hat : 1,VDE,UL,CQC approval2,function:1) ON-OFF 2 ... ) ON-OFF LIT3,Button type:V-sharp,plane,arc sharp body type: A & D type4,Specifications 1)Contact Resistance ... Momentary On-off,On-off-on,on-on with waterproof hat