Switch type:power switch button Hole diameter:12mm/16mm/19mm/22mm Led color:red/orange/green/blue/white Operation method:Momentary / Latching Led Voltage:3-6V/12-24V/110-220V Maximum current:4A Waterproof level:IP66 Contact type:1NO1NC Difference between Momentary self-reset and Latching self-locking: 1.Momentary/Self-reset: When you press the button, press-key will automatically return.(Like a car horn switch.Press it-power on, release it-power off.) 2.Latching self-locking: When you press the button, press-key will stay in position until you press again.And then the press-key return.(Like a light switch.Press it-power on, press it again-power off.) Certificate Wiring Instructions 1.What does the signal “C”?"NC" and "NO" means? " NC ": Normal Close " NO ": Normal Open " C " : Common 2.Do lights and switches have electrodes? The lamp and switch have no electrode, no need to divide the positive and negative poles when wiring. Wiring Diagram?12mm? 1?The button turns the LED light on and off?the circuit is alway open unless press the button 2?LED lights are always on?the circuit is alway open unless press the button. Wiring Diagram?16mm/19mm/22mm? 1?The button turns the LED light on and off?the circuit is alway open unless press the button. 2?LED lights are always on?the circuit is alway open unless press the button. 3? The button turns the LED light on and off?the circuit is alway close unless press the button. 4?LED lights are always on?the circuit is alway close unless press the button.