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News

Door monitoring unit with programmable timer.

Videx Security : 25 June, 2007  (New Product)
Easy operation monitoring unit for doors includes alarm and door activation sounder.
The new DM3 self contained door monitoring unit from Videx Security requires only an external low voltage power supply and a set of normally closed door contacts to operate. The unit is microprocessor controlled and includes several modes of operation and programmable time options so it can be configured to meet a variety of applications.

The DM3 incorporates a number of important features including an internal sounder which can be programmed to chime when the door opens or to bleep during door opening. It can also generate an alarm sound whilst in an alarm condition.

The unit's internal dry contact relay has common, normally open and normally closed connections. It can be used to activate a door open LED on Videx telephone handsets or activate external sounders and strobes.

An override two position keyswitch is located on the outside of the plastic housing and can be used to disable the unit when required - typically when the door needs to be held open without the alarm going off. The alarm trigger input will set the door monitoring unit into alarm condition immediately after being triggered and will not switch off until timed out.

The 'Enable' input feature is used to monitor if a door has been opened correctly or has been forced. This 12V positive input can be taken from the unit used to release the door with an entry device such as code lock, proximity reader or intercom system. It can also be used to identify if a door release was authorised.
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