7 Hidden Security Sensors That Prove You Shouldn’t Bring DIY Security to Your Office

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7 Hidden Security Sensors That Prove You Shouldn’t Bring DIY Security to Your Office, slide 2

Nascom Black Hornet Switch — A novel low-profile sensor from the inventors of the Magnasphere alarm contact. The device works off the presence of a ferrous metal object; for example, it senses a screw that’s securing an object and trips the sensor circuit if the screw is removed. It’s a nonpowered closed-loop device that can be connected to any normally open wireless transmitter.

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