The idea behind this compact and economical Vibration Sensor Alarm is very simple. It uses a cheap and cheerful vibration sensor to drive a piezo-sounder. As can be seen in the circuit diagram, it is ...

Eufy is a smart home technology company that makes everything from robotic vacuum cleaners and mops, to security cameras, video doorbells and, in the case of this review, alarm systems. This is a five ...

This security system is entry-level in every sense of the word, and it’s only appropriate to serve the most basic of security needs. I suppose if I was looking for a no-frills, absolutely basic ...

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