His Prime disabled three alarm sensors that were triggered by his entry.

A second feature allows pagers to be alerted from remote alarm sensors, thus increasing safety or security where appropriate.

He stared up at the alarm sensor, watching for the tell-tale red light to come on if it detected the slightest movement from him.

It is equipped with electric alarm sensors and is topped by a razor-like ribbon of wire.

On the second attempt, an alarm sensor detected him.

Reaching the door, Titov carefully looked for an alarm sensor on the door and was pleasantly surprised to see none.

Its small window was frosted, but sealed shut and also equipped with alarm sensors.

Although the door to the corridor was locked, it had no alarm sensors; whatever went on in here was obviously not security sensitive.

The Jem'Hadar had instructed the system to increase density by twenty percent and then shorted the boards, including the alarm sensors.

He crawled along for about thirty minutes, discovering and disarming two alarm sensors before they discovered him.