Monitor the open or closed status of commercial overhead doors, rolling shutters, and other large moving doors with this Heavy-Duty Garage Door Magnetic Contact Sensor.

Designed for demanding commercial and industrial applications, this wired magnetic switch features a rugged metal / zinc-alloy contact housing, a Normally Closed (NC) circuit, and an adjustable L-shaped magnet bracket for flexible alignment on overhead and rolling door systems.

Ideal for alarm systems, access control, building automation, and door-status monitoring.

Key Features

• Heavy-duty magnetic door contact

• Designed for garage and overhead doors

• Suitable for rolling shutter doors

• Normally Closed (NC) wired switch

• Adjustable L-bracket

• Rugged metal / zinc-alloy contact housing

• Wide-gap style configuration for moving commercial doors

• Designed for low-voltage monitoring circuits

• Compatible with many alarm and automation systems

• Surface-mount installation

• Ideal for commercial and industrial applications

• Helps monitor door open / closed status

Normally Closed – NC Operation

The sensor uses a Normally Closed magnetic contact circuit.

When the door is closed and the magnet is properly aligned with the sensor:

Circuit = Closed

When the door opens and the magnet moves away:

Circuit = Open

The connected alarm panel, access-control system, or monitoring equipment can then interpret this change as a door-open condition.

Heavy-Duty Commercial Construction

Unlike small residential door contacts, this style of sensor is designed for larger moving-door applications.

The heavy-duty metal housing helps protect the switch in environments where it may be exposed to:

• Door vibration

• Warehouse traffic

• Industrial environments

• Repeated opening and closing

• Commercial garage-door operation

• Rolling shutter movement

Adjustable L-Bracket

The magnetic actuator mounts to an adjustable L-shaped bracket, allowing the installer to position the magnet for proper alignment with the stationary contact.

This is especially useful on:

• Sectional overhead doors

• Rolling steel doors

• Roller shutters

• Gates

• Commercial garage doors

where movement and door construction can make standard flush-mounted contacts impractical.

Alarm & Automation Applications

The magnetic contact can be connected to compatible:

• Burglar alarm panels

• Access-control systems

• Door-position monitoring circuits

• Building automation systems

• Security systems

• Gate controllers

• Door controllers

• Remote monitoring equipment

It functions as a door-position signaling device rather than as a lock or door operator.

Common Applications

Ideal for:

• Commercial overhead doors

• Rolling steel doors

• Roller shutter doors

• Warehouse doors

• Loading dock doors

• Commercial garage doors

• Industrial doors

• Storage facilities

• Secured gates

• Service-bay doors

• Distribution centers

Typical Electrical Rating

A commonly supplied configuration of this sensor style is rated up to:

Maximum Voltage: 100VDC
Maximum Current: 0.5A
Maximum Contact Load: 10W

Verify the electrical rating of the exact sensor supplied before connecting it to the control system.

Product Specifications

Product Type: Heavy-Duty Magnetic Door Contact
Switch Type: Wired Magnetic Contact
Circuit: Normally Closed – NC
Mounting: Surface Mount
Magnet Mounting: Adjustable L-Bracket
Housing: Heavy-Duty Metal / Zinc Alloy
Application: Door Position Monitoring
Typical Maximum Voltage: Up to 100VDC*
Typical Maximum Current: Up to 0.5A*
Typical Maximum Load: Up to 10W*
Door Types: Overhead, Rolling, Shutter & Garage Doors

*Verify the rating of the exact supplied unit before installation.

What's Included

• Heavy-duty magnetic contact sensor

• Magnetic actuator

• Adjustable L-bracket

• Standard mounting hardware as supplied

Not Included

• Alarm panel

• Access-control controller

• Door operator

• Power supply

• Field wiring

• Door or gate

• Additional monitoring hardware

Important Installation Information

For reliable operation:

• Mount the wired sensor on the stationary portion of the opening

• Mount the magnet to the moving door or gate

• Align the magnet with the sensor when the door is fully closed

• Keep wiring protected from moving hardware

• Verify the required operating gap before final installation

• Test the NC circuit after installation

Do not route wiring where it can become pinched by tracks, rollers, hinges, or moving door components.