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Black Box Explains...Dry contacts.

A dry contact, also called a volt-free contact, is a relay contact that does not supply voltage. The relay energizes or de-energizes when a change to its input has occurred.... more/see it nowIn other words, a dry contact simply detects whether or not an input switch is open or closed.

The dry contacts in the ServSensor Contact provide a simple two-wire interface that can be easily adapted to third-party sensors and devices. Because you define what the open or closed condition means, dry contacts are infinitely adaptable.

Use dry contacts to monitor alarms such as fire alarms, burglar alarms, and alarms on power systems such as UPSs. A very common use for dry contacts is to detect whether a cabinet door is open or closed. collapse

  • Video...AlertWerks Environmental Monitoring & Security System

    AlertWerks Environmental Monitoring System<br /><br />The AlertWerks Environmental Monitoring System is one of the most comprehensive, affordable insurance policies you can buy against problems that can damage your technology infrastructure... more/see it now equipment and cost you thousands of dollars—from temperature extremes and water damage to fire and security breaches. Learn how to protect your mission-critical equipment for as little as $300. collapse

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