Adafruit
16mm Illuminated Pushbutton - Blue Latching On/Off Switch
A 16mm illuminated pushbutton with a built-in blue LED and latching on/off action. Press once to switch on, press again to switch off — ideal for power switc...
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A 16mm illuminated pushbutton with a built-in blue LED and latching on/off action. Press once to switch on, press again to switch off — ideal for power switches, mode selectors, and control panels.
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 the switch is active, when it's off, or keep it always lit — whatever suits your project. The LED has a forward voltage of approximately 3V; connect a 220–1000Ω resistor in series when using a 3V or higher supply.
Key Features
- Latching On/Off Action – Push to toggle between connected and disconnected states
- Built-In Blue 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 blue illuminated face
Ideal For
- Project enclosures and control panels
- Power on/off switches with LED indicators
- Mode selection buttons
- Arduino and microcontroller input projects
Package Contents
- 1× 16mm Blue Illuminated Latching 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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