Features: This capacitive touch switches detects finger touches through up to 2cm of insulating materials like wood, glass, plastic, acrylic and stone panels with precise responsiveness. Works with 3.7V/5V/12V/24V power supplies, supporting maximumly power outputs from 8W to 36W depending on voltages for versatile applications. Choose from A/B/C/D operations types including toggle, reverse control, dimmable or simple on/off modes to suit different usage scenarios. Copper made contact points ensures durability with none mechanical wear, capable of handling up to 2.5A LED driving current reliably. Ideal for LED strips lighting control, liquid levels detection, and other projects requiring stable touch sensitive switching. Specifications: Component:Copper Operating voltages: 3.7V/5V/12V/24V Make highly power: 3.7V<8W, 5V<12W, 12V<28W, 24V<36W Penetration thickness: 2CM Size:As Picture Shown Optional function modes: Type 1: touch to open, release to close Type 2: touch to close, release to open Type 3: Touch to turn on the light, touch again to turn off the light, and while the light is on, press and hold to adjust the brightness. Type 4: Touch to turn on the light, touch again to turn off the light, only on and off, none dimming function Package Includes: 1pcs Capacitive Touch Switches note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.