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Door Alarms Brattleboro VT

Local resource for door alarms in Brattleboro. 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.

Squiers Fire Protection
(802) 258-9111
222 Old Ferry Rd
Brattleboro, VT
 
Code 3 Products
(802) 257-0428
92 Canal St # 2
Brattleboro, VT
 
Alarm Central
(586) 949-8440
26950 23 Mile Road
Chesterfield, NH
 
Hunter North Assoc Llc
(603) 363-8200
1757 Route 9
Spofford, NH
 
Dependable Fire & Safety
(413) 774-7516
322 Wells St
Greenfield, MA
 
Akal Security Inc
(802) 258-2288
204 Main St
Brattleboro, VT
 
Westco Security Systems
(636) 536-1120
18437 Edison Avenue
Chesterfield, NH
 
Paladin Agency
(802) 365-9400
299 Timson Hill Rd
Newfane, VT
 
Extinguishers Plus
(603) 352-2266
277 Old Homestead Hwy
Swanzey, NH
 
Hampshire Fire Protection Co
(603) 358-6736
277 Old Homestead Hwy
Swanzey, 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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