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Door Alarms Lewiston ME

Local resource for door alarms in Lewiston. 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.

Shield Security
(207) 376-4340
571 Sabattus St # 3
Lewiston, ME
 
Fire-Safe Equipment Co
(207) 784-7525
159 First Flight Dr
Auburn, ME
 
J & B Security
(207) 689-4939
9 Gamage Ave
Auburn, ME
 
Fire Tech & Safety-New England
(207) 377-2800
84 State Route 133 # A
Winthrop, ME
 
ADT® Home Security
(888) 542-4123
536 Riverside St
Portland, ME
Description
Get a Security System for Just $99! Protect Your Home and Call ADT® Home Security Today.
Phone Hours
MON - FRI 9:00AM - 11:00PM; SAT 9:00AM - 6:00PM; SUN CLOSED

Ace Detective & Security Inc
(207) 784-2890
11 Bellegarde Ave
Lewiston, ME
 
AAA Fire Extinguisher Co
(207) 784-8306
328 Rodman Rd
Auburn, ME
 
Berkshire Alarm
(860) 567-5267
Po Box 879
Litchfield, ME
 
ADT® Home Security
(888) 564-9618
15 Pleasent Hill Rd
Scarborough, ME
Description
Get a Security System for Just $99! Protect Your Home and Call ADT® Home Security Today.
Phone Hours
MON - FRI 9:00AM - 11:00PM; SAT 9:00AM - 6:00PM; SUN CLOSED

K E Security
(207) 433-5077
317 State St
Bangor, ME
 

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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