Door Monitoring Unit
Size (mm) : 110H x 70W x 30D
Box material : White ABS plasticWeight: 0.3 Kg
The DM3 is a self contained door monitoring unit requiring only an external low voltage power supply and a set of normally closed door contacts. The unit is microprocessor controlled and includes several modes of operation and programmable time options to allow the configuration of the unit to meet a variety of applications. The unit incorporates the following features:-
Internal sounder - Can be programmed to chime when the door opens, Bleep during door open and generate an alarm sound during an alarm condition.
Internal dry contact relay - With common, normally open and normally closed connections. This output can be used to activate a door open LED on Videx telephone handsets or activate external sounders and strobes.
Override key switch - The two position key switch is located on the outside of the plastic housing and can be used to disable the unit when required. For example if the door needs to be held open without the alarm going off.
Alarm trigger input - This input will set the door monitoring unit into alarm condition immediately after being triggered and will not switch off until timeout (Programmable timeout). It can be triggered using a switched negative.
Enable input - 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 (i.e. Code lock, proximity reader, intercom system) and can be used to identify if a door release was authorized (i.e. the door was released by an intercom system, codelock etc).
UK - Mainland:
A FREE delivery service is offered on all UK Mainland deliveries. Orders for In Stock items received before 4.00pm (Monday to Friday) are dispatched the same day on a next working day delivery service. Available items are in stock at our suppliers and the expected delivery lead time is indicated. Saturday Delivery and Before 10.30am Delivery options are available on checkout of most items at a cost of £10.00.
UK Northern Ireland & Off-Shore:
Delivery to Northern Ireland, Scottish Islands, Isle of Man and Isle of Scilly is FREE for light items sent with Royal Mail and £10.00 for courier delivered items. Delivery may take a day longer than the time indicated.
Ireland & Rest Of Europe:
Delivery is from £8.00 and is based on the total weight of your order. Delivery may take up to two days longer than the lead time indicated. UK VAT of 20% will be deducted from your order total if you supply your verifiable EU company VAT number on checkout.
USA & Rest of World:
Delivery is from £12.00 and is based on the total weight of your order. Delivery may take up to three days longer than the time indicated. UK VAT of 20% will be deducted from your order total when you checkout.