Dry contact sensors are user definable and can be used to detect many different inputs such as ups status security systems air conditioning status.
Dry contact door switch.
These general purpose switches can be either input or.
The dry contact sensor is a simple connection to burglar alarms fire alarms or any application that requires monitoring by the sensorprobe.
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Magnetic contacts are low current devices that send a signal to an alarm or a supervised monitoring system when an armed door is opened.
2sets magnetic reed switch normally open closed nc no door alarm window security magnetic door switch magnetic contact switch reed switch for gps alarm or other device dc 5v 12v 24v light.
These door contact position switches.
1 pcs white recessed door contacts nc security alarm window sensors with magnetic reed switch.
A dry contact is the synonym of volt free it is not wetted by a voltage source dry contact can refer to a secondary set of contacts of a relay circuit which does not make or break the primary current being controlled by the relay.
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Dry contact may mean any of the following in electronics.
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Usually some other contacts or devices have the job of starting or stopping the primary.
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A genie or overhead door series iii garage door opener can be identfied by the wall console.
It is necessary to use a dry contact adapter when installing the aladdin connect kit to a genie or overhead door series iii garage door opener.
A series iii garage door opener will use a wall console with black button part 37222r or 37223r.
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