The circuit presented here is a very simple and yet highly effective alarm system for protecting an object. The circuit requires no special devices and can be built using components that you will no ...

This simple alarm circuit was designed for use in a combined garage and rumpus room. It can be assembled on Veroboard and uses just one IC plus a handful of cheap components. The circuit is based on a ...

We may earn a commission from links on this page. Whether it's paranoia or past experience, protecting your bag from potential thieves isn't a bad idea. It's also a fun DIY project! The folks over at ...

A few simple components are all it takes to create an over-temperature alarm. The circuit in Figure 1 requires only an ordinary negative-temperature-coefficient (NTC) thermistor, two common ICs, and a ...

If you could spend a couple of bucks on a simple project that might prevent a $2000 repair bill on your vehicle, you’d probably build it, right? That’s the idea behind this simple low-pressure alarm ...

Ring's $199 Z-Wave-enabled Alarm Security Kit is so simple you might overlook it at first. The system includes a base station, a keypad, a door/window sensor, a motion sensor and a Z-Wave range ...

Nest announced a range of new devices at its big event in September, including the Hello video doorbell and a new alarm system called Secure. Nest Secure offers three devices, all with a nice design, ...

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