The body is a black plastic with the LED built inside. There are two contacts for the button and two contacts for the LED, one marked + and one -. The forward voltage of the LED is about 2.2V so connect a 220 to 1000 ohm resistor in series just as you would with any other LED to your 3V or higher power supply.
This particular button has a yellow body and LED and is momentary, normally open. The two switch contacts are not connected normally. When you push the button they will temporarily connect until the button is released. The LED is separated from the button, so you can make it light up when pressed, light up when not pressed, always lit, etc.
- Max Dimensions: 18.06mm / 0.7″ x 18mm / 0.7″ x 29.4mm / 1.15″
- Shaft Dimensions: 14.89mm / 0.58″ x 15.56mm / 0.6″ x 18.7mm / 0.73″
- Button Height: 5mm / 0.2″
- Button Height Depressed: 3.5mm / 0.15″
- Weight: 4.6g