The Dry Contact sensor is a simple connection to burglar alarms, fire alarms or any application that requires monitoring by the sensor. Dry contact sensors are user definable and can be used to detect many different inputs such as UPS status, security systems, air conditioning status.
This product works with all gateway as part of the AlertWerks environmental monitoring system.
These general purpose switches can be either input or output. When used as an output it can source up to 20 mA. You can select the output voltage by setting the Output Level to a Low or a High. When set to Low the pin will output 0 volts. When set as a High the pin will output 5 volts.
When used as an input a switch will retain any error condition until it is read via SNMP. Therefore if a switch encounters a critical condition at any time it must report that condition before it can return to a normal state.
Input pins can be used to detect whether or not an input switch is open or closed. In combination with external sensors, input pins can detect whether a door or window is open or closed, if there is a water incursion and many other conditions.
The intelligent Dry Contact Sensors feature one dry-contact input per RJ-45 port on the ServSensor Hub. An open/closed contact switch indicates Alarm or Normal. The input voltage range of 0 to 5 VDC can be set through software. Also normally open / normally closed can be set through software.
Connections —
Input: (2) terminal screws
Output: (1) RJ-45 M with 4.5 m UTP cable
Engine —
Sensor type: electrical contact
Measurement range: open / closed
Measurement rate: one reading / s
Max. cable length: 300 m
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