Pull-Apart switches in security are used to monitor the opening or separation of objects, triggering an alarm when a normally connected pair of contacts is pulled apart. They are commonly used for security applications where traditional magnetic sensors may not work, such as on roll-up doors, gates, outdoor equipment, or portable merchandise.

They provide a flexible way to detect unauthorized movement for various security needs, from protecting a portable shed or vehicle.

Types and Applications

Magnetic pull-apart sensors 

These have two parts, a sensor and a magnet, that are connected by a flexible wire or cable.

How they work: When the two parts are together, the circuit is closed. When they are pulled apart, the circuit is broken, and an alarm is triggered.

Common uses would be:

• Doors and windows: Especially for sliding doors or windows where a traditional sensor isn’t ideal.
• Outdoor equipment: To monitor the location of items like lawnmowers, ATVs, or golf carts.
• Portable merchandise: Used in places like truck docks or marinas for portable goods.
• Gates: To monitor gates, ensuring they are not opened without authorization.

Specialized pull-apart switches

Some heavy-duty versions of these switches are designed for more demanding environments.

How they work: A probe with a magnet is pulled out of a hollow tube, causing the switch to open.

Common uses would be:

• Roll-up doors – Can be used to secure large roll-up doors.
• Equipment protection – Ideal for protecting any mobile equipment that can be driven or towed, such as tractor-trailers or boats. 

How Pull-Apart Switches and Alarms Enhance Security

• Tamper detection: They can alert you if a door or window is forced open, even if the alarm wasn’t manually set.

• Unauthorized movement detection: They can detect if equipment or merchandise is moved from its designated location.
• Flexible security: They provide a way to secure objects that are difficult to protect with traditional sensors, such as those with large gaps or a need for flexible connections.

3 1/2″ Pull-Apart Magnetic Contact Series | PA1000-80, PA1000-81

Comes standard in NC electrical configurations. We can also customize these contacts to meet your specific needs.
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3/4″ Pull-Apart Magnetic Contact Series | AG100-12, AG101-12, AG102-12

Comes standard in NC electrical configurations. We can also customize these contacts to meet your specific needs. Learn More

Single Zone Battery Powered Portable Equipment Alarm | SZA460

Attractive, low cost, battery powered alarms that can be used anywhere you want a gate or building to be secured where there is no power. Learn More.