Sometimes security doesn’t need to be overly complex to be effective. Instructables user [1234itouch] recently built a simple laser tripwire alarm that can be mounted virtually anywhere, complete with ...

This circuit is a laser alarm system like the one we see in various movies. It uses a laser pointer beam to secure your valuables and property. Essentially, when the beam gets interrupted by a person, ...

Instructables user [EngineeringShock] has been hard at work building a laser trip wire security system, complete with a combination lock. The security system works just like you see in the movies, ...

Alright, so imagine waking up with the crusties in your eyes, barely able to see, and you have to hit a bull's eye on a target in order the shut of the noise from hell also known as your alarm clock.

The Gun Operated Alarm Clock was a good conceptual design, but the Laser Target Alarm Clock has two things that its predecessor lacks. First off, it is vastly more challenging (and therefore annoying) ...

When it comes to home security, it's simpler than you'd think to DIY a quality system. What's a security system without lasers, though? In the video above, MAKE Magazine shows how to create your own ...

Remember the days of the simple photo-electric cell? Using either a transmitter-receiver pair or a single TX/RX with a retro-reflector, the interruption of an IR beam would trigger an alarm, stop a ...

OPTEX, a leading global sensor manufacturer, is expanding its series of award-winning REDSCAN laser sensors with the launch of a new short range, indoor model that features the same proven benefits of ...