Adafruit
Tower Light - Red Yellow Green Alert Light with Buzzer - 12VDC
A tri-colour tower light with red, yellow, and green LED segments plus a built-in buzzer, powered by 12V DC. Each light and the buzzer are independently cont...
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A tri-colour tower light with red, yellow, and green LED segments plus a built-in buzzer, powered by 12V DC. Each light and the buzzer are independently controlled via separate wires, making it easy to indicate machine status, project states, or alert conditions from a microcontroller.
The light mount rotates 180° so the tower can be installed vertically, horizontally, or at any angle in between. Mounting holes on the base allow secure attachment to panels and enclosures.
Key Features
- Three Colour Segments – Red, yellow, and green LEDs
- Built-In Buzzer – Audible alert controlled via a separate wire
- Independent Control – Each light and buzzer activated individually by grounding its wire
- Adjustable Mount – 180° rotation for vertical, horizontal, or angled installation
- Mounting Holes – Secure panel mounting
Wiring
- Brown wire – Common +12V power
- Red wire – Red light (ground to activate)
- Yellow wire – Yellow light (ground to activate)
- Green wire – Green light (ground to activate)
- Orange wire – Buzzer (ground to activate)
Specifications
- Operating Voltage – 12V DC
- Current – ~50 mA per segment
- Light Source – LED (red, yellow, green)
- Mount Rotation – 180°
Ideal For
- Machine and process status indication
- IoT and home automation alerts
- Workshop and lab equipment monitoring
- Fun project builds and escape rooms
Package Contents
- 1× Tri-Colour Tower Light with Buzzer (12V DC)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- 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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