Pyroelectric infrared sensor is widely used in alarm, and the field of moving human body detection.

热释电红外传感器被广泛的应用在报警器、人体移动检测的相关领域。

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In order to reduce child drowning in the unattended ponds or swimming pools, a design method of a pool alarm sensor based on pulse-width anti-narrow is proposed.

为了减少无人看守的水池或游泳池中小孩的溺死事件，提出了一种基于脉宽反窄的水池警报传感器设计方法。

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UV unit: High speed low pressure UV emitter; UV sensor with alarm.

紫外线单元：高速低压紫外线放射器；带报警系统的紫外线传感器。

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We worked with the top sleep experts in the world to create a completely wireless sleep sensor, silent alarm clock, and personal sleep coach for your iPod touch, iPad, and iPhone.

FORBES: Trade In Your Recalled Jawbone UP Product For A LARK

Steve Fussy, from the AWE, said the false alarm, which was triggered by a "sensor fault", was not meant to alert residents.

BBC: Atomic weapons base false alarm wakes neighbours

Fido can pick up the smell of TNTvapor at concentrations of just a few parts per trillion, and it was the first sensor to find buried mines at a level comparable to dog performance, with a false-alarm rate of less than 5%.

FORBES: A Nose For Bombs