Features: Opening size: 16mm/13mm/10mm, input voltages: 3.7-24V, carrying voltages: 3A. The LED dimmer switches with cord is recessed installation, save space, Sensors switches can be easy connecting to the LED light. Just touch on, touch off again, press and hold the dimmer switches to adjust light brightness from 0% to 100%, touch lamp dimmer control switches modules long press for stepless dimming and control your light. Suitable for cabinet, wine coolers, display cabinet, closet, etc. 12v light Sensors switches dimmer also used to control LED light such as table llight, ceiling light, pendants light and other appliances, you can run LED switches on other items. Please make sure your driver is a constant voltages driver since this dimmer switches can be connecting to constant voltages driver only. And this LED dimmer switches must cannot be connecting to the constant current driver. Specifications: Materials: Plastic Color: Black/White Opening size: 16mm(0.63inch)/13mm(0.51inch)/10mm(0.39inch) Input voltages: 3.7-24V Carrying voltages: 3A Package Includes: 1Pc Touch switches note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.