Magnetic contacts (magnetic door sensors) are a fundamental security component in alarm systems, detecting whether doors and windows have been opened. They are one of the simplest yet most effective alarm sensors, enabling the detection of unauthorized entry at the first point of contact.
How do magnetic contacts work?
A magnetic contact consists of two parts:
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Sensor housing
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Magnet (magnetic component)
When the door or window is closed, these two pieces stay close together.
When the door is opened, the magnetic field is disrupted, and a signal is sent to the alarm panel.
This signal can trigger an alarm or generate a notification.
Where is it used?
Magnetic contacts typically have:
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Exterior doors
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Balcony doors
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Windows
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Office entrance doors
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Warehouse doors
It is used at entry points such as these.
It forms the first line of security.
How is it different from a motion sensor?
Magnetic contact:
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It works when the door or window is opened.
The motion sensor, on the other hand:
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It activates when it detects motion indoors.
Magnetic contacts provide early warning; the motion sensor is the second layer.
Are there wired and wireless options?
Yes.
Magnetic contacts:
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Wired model for wired systems
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Battery-powered model for wireless alarm systems.
It can be preferred as such.
Wireless models offer the advantage of portability.
Can it be used outdoors?
Standard magnetic contacts are suitable for indoor use.
For outdoor use:
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Water and dust resistant (IP protected) models
should be preferred.
Is the magnetic contact visible?
Standard models are mounted to the door frame and are visible.
However:
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Recessed magnetic contacts
It can be placed inside the door and will not be noticeable from the outside.
Will it give a false alarm?
False alarms are rare if installed correctly.
However:
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If the door alignment is disrupted
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If the distance between the magnets increases
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If low-quality products are used
Problems may arise.
Professional installation is important.
Importance for Workplaces
Magnetic contacts in workplaces:
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It detects doors being opened after working hours.
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It protects the warehouse entrance.
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It reports unauthorized access at an early stage.
It is especially critical for safe and rear door security.
Does it work with GSM and mobile notifications?
Yes.
When the magnetic contact is triggered:
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The siren activates.
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You will receive a notification on the mobile app.
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SMS messages can be sent via GSM.
This allows for immediate intervention.
How many magnetic contacts are needed?
This is the place:
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Number of doors
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Number of windows
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Risk level
It is determined according to...
A separate contact is recommended for each input point.
