BUZZ BEAM consists of two main parts: a pointer unit and a receiver unit. Both units come with built-in rechargeable batteries and integrated magnets, allowing them to be easily mounted on door frames, a fridge, or any other metal surface.
The pointer unit projects a beam that aligns with the receiver. When something interrupts the beam, the receiver immediately triggers a buzzing alarm, which continues for as long as the beam remains broken. It’s a simple but effective way to detect movement through a space.
But that’s not all.
BUZZ BEAM can also be used with small mirrors mounted on magnetic swivel holders. These mirrors allow you to redirect the beam in different directions, bouncing it across a room or hallway. By placing multiple mirrors strategically, you can create a beam-based maze alarm system.
The result? A fun and clever setup that alerts you the moment someone crosses the invisible path—perfect for catching a sneaky sibling trying to surprise you with a scare.
Available as part of our Build-A-Brain subscription boxes.

