This no-frills security system works well enough to support its $130 price tag.

If you’re looking for a basic—extremely basic—DIY security system, take a look at X-Sense. The company, best known for its range of smoke detectors, offers a bare-bones system that works fairly well and costs next to nothing.

The X-Sense Home Security Kit is available in two versions: There’s the $130, 5-piece kit reviewed here, which includes a hub, motion sensor, two door/window sensors, and a remote-control key fob.
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