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Door Alarms Rochester NH

Local resource for door alarms in Rochester. Includes detailed information on local businesses that provide access to portable door alarms, burglar alarms, door wedge alarms, door knob alarms, vibration sensors, and home security systems, as well as advice and content on security door stops.

Action Alarm & Communications
(585) 232-1410
16 Atlantic Ave
Rochester, NH
 
CTC Security Systems
(603) 335-4373
79 South Main Street Suite 204
Rochester, NH
 
Document Security Systems Inc
(585) 325-3610
28 East Main Street
Rochester, NH
 
Casco Security Systems
(585) 424-5000
1344 University Ave
Rochester, NH
 
Barrington Security Systems Inc
(856) 546-0796
130 Moore Avenue
Barrington, NH
 
Brinks Home Security
(585) 377-1790
Linden Oaks
Rochester, NH
 
Alarm Center Inc
(585) 266-5720
202 Ridge Road East
Rochester, NH
 
Custom Communications Inc Custom Alarm
(507) 288-5522
1661 Greenview Drive Southwest
Rochester, NH
 
All State Fire Equipment
(603) 330-1002
955 Salmon Falls Rd
Rochester, NH
 
Alarm Masters
(330) 364-6991
517 East Iron Avenue
Dover, NH
 

Door Alarms

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Doors can utilize magnetic contact sensors to detect when a door is opened. The sensor mechanism is housed in the switch side of the sensor and a magnet is housed in the other half. Most door alarms utilize a contact switch, which has two metallic parts that must stay in contact when the sensor is armed. In order for a door to be slid or swung open, the mechanism's metallic contacts lose contact with one another. One half of the door sensor is attached to the fixed side of the doorway, and the other is attached to the movable door. When the door is opened the two parts of the mechanism are separated and the alarm signal is sent.

These mechanisms use a strong magnet that can maintain magnetic contact even when the door is opened slightly. This makes it possible to leave a door open to allow airflow between rooms, yet still have all the protection of armed door alarms.

Electromechanical door locks are powerful electrified lock mechanisms which keep them from being opened. They are an important form of security in commercial properties but can also be used in home security systems. These systems often integrate a magnetic contact sensor so if by chance the door should be opened, an alarm would be activated.

Learn more about home security systems .

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