Dear, if you'd like 3-6V voltage Please contact us Or be aware in the order Thanks! Switch type:Metal Switch Button Hole diameter:16/19/22mm Led color:Red/Yellow/Green/Blue/White Shell color:Silver Operation method:Momentary/Latching Led Voltage:3-6V/12-24V/110-220V Maximum current:3A Waterproof level:IP65 Contact type:1NO1NC Difference between Momentary self-reset and Latching self-locking: 1/Self-reset: When you press the button, press-key will mechanically return(Like a vehicle horn change it-power on, launch it-power off) 2/Self-locking: When you press the button, press-key will stay in role till you press back then the press-key return(Like a light-weight change it-power on, press it again-power off) Manual measurement, there could be a little error Wiring Diagram(16/19/22mm) 1、The button turns the LED mild on and off,the circuit is alway open except press the button 2、LED lighting are always on,the circuit is alway open until press the button 3、 The button turns the LED gentle on and off,the circuit is alway shut unless press the button 4、LED lights are always on,the circuit is alway shut except press the button Certificate authentication