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Door Alarms Aberdeen SD

Local resource for door alarms in Aberdeen. 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.

Aberdeen Security & Invstgtns
(605) 226-2877
2209 17th Ave SE
Aberdeen, SD
 
Securex Alarm Services
(410) 964-9000
5950 Symphony Woods Road Suite 150
Columbia, SD
 
ADT Security Systems Inc
(803) 254-5002
720 Gracern Road
Columbia, SD
 
American Home Security- Inc.
(803) 691-8861
6423 Monticello Rd
Columbia, SD
 
Vector Security Systems - Central Station
(419) 525-0288
186 Sturges Avenue
Mansfield, SD
 
Fire Safety First
(605) 229-2270
413 N Congress St
Aberdeen, SD
 
Atlantic Home Security
(410) 715-1122
10320 Little Patuxent Pkwy
Columbia, SD
 
U S Home Security
(803) 783-5191
7356 Garners Ferry Road
Columbia, SD
 
Statewide Security Systems
(803) 788-0733
100 Greengate Drive
Columbia, SD
 
ADT® Home Security
(888) 564-9618
540 Deadwood Ave
Rapid City, SD
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

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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