Adafruit
16mm Illuminated Pushbutton - Yellow Momentary
A 16mm illuminated pushbutton with a built-in yellow LED and momentary action. The switch contacts connect only while the button is held down and return to t...
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A 16mm illuminated pushbutton with a built-in yellow LED and momentary action. The switch contacts connect only while the button is held down and return to their normally-open state when released — perfect for trigger inputs, action buttons, and interactive controls.
The LED is wired independently from the switch contacts, giving you full control over when the light is on. You can have it light up when pressed, when not pressed, or keep it always lit — whatever suits your project. The LED has a forward voltage of approximately 2.2V; connect a 220–1000Ω resistor in series when using a 3V or higher supply.
Key Features
- Momentary Action – Normally open; contacts connect only while pressed
- Built-In Yellow LED – Independently controlled from the switch for flexible indicator options
- 4 Contacts – Two for the switch, two for the LED (marked + and −)
- 16mm Panel Mount – Medium-sized button, easy to press without being bulky
- Black Plastic Body – Clean look with yellow illuminated face
Ideal For
- Project enclosures and control panels
- Trigger and action buttons
- Warning or caution indicators
- Arduino and microcontroller input projects
Package Contents
- 1× 16mm Yellow Illuminated Momentary Pushbutton
Jargon buster
Plain-language definitions for the technical terms used above.
- LED
- A light-emitting diode (LED) is a small electronic component that emits light when current flows through it in the correct direction. Because it only conducts one way, its polarity matters, and a through-hole LED must be soldered the correct way around to light up.
- microcontroller
- A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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