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White plastic security contact sensor with magnet bracket and grey armored cable

The Wires Zone

The Wires Zone Overhead Door Floor Garage Roll-Up Shutter Contact Sensor Security Alarm Switch

SKU CH-ETNT-FM5G3

A heavy-duty roller-shutter contact sensor with a magnet-mounted bracket, 3-inch minimum operating gap and armoured cable for overhead garage doors

  • TypeOther
  • Overhead mounting simplifies installation on roll-up doors
  • Heavy-duty construction withstands frequent garage use
  • Magnet-on-bracket design ensures reliable alignment
  • 3-inch minimum gap tolerates door movement
  • 30-3/4-inch cable with 21-1/2-inch armored sleeve protects wiring

Overhead Door Contact Sensor

This magnetic switch mounts on overhead garage doors and roll-up shutters to detect when the door opens or closes. It is suited for homeowners or small businesses adding a wired perimeter sensor to an existing alarm panel.

Wired Alarm Loop Compatibility

The sensor provides a simple closed-loop circuit that opens when the magnet moves away, so your control panel must accept a normally-closed dry-contact input. It is not rated for AC voltage and requires a low-voltage alarm circuit to function correctly.

Armoured Cable and Mounting Bracket

A 30-3/4 inch PVC 22AWG lead includes a 21-1/2 inch armoured sleeve to resist cutting or abrasion at the door edge. The package supplies one switch bracket measuring 82mm by 55mm by 31mm and a magnet bracket measuring 105mm by 45mm by 10mm for surface mounting.

Highlights

  • Overhead mounting simplifies installation on roll-up doors
  • Heavy-duty construction withstands frequent garage use
  • Magnet-on-bracket design ensures reliable alignment
  • 3-inch minimum gap tolerates door movement
  • 30-3/4-inch cable with 21-1/2-inch armored sleeve protects wiring

Specifications

TypeOther

Questions about this item

What comes in the package and is any extra wiring or mounting hardware needed?

The package contains one overhead-mounted magnetic contact switch with its bracket, a magnet on a separate bracket, and a 30-3/4" PVC 22AWG cable that includes a 21-1/2" armored sleeve. No additional wiring or hardware is mentioned.

Which version of this sensor should I choose for a standard roll-up garage door?

Only one version is listed: a heavy-duty roller-shutter contact with a minimum 3" operating gap, 82mm x 55mm x 31mm bracket and 105mm x 45mm x 10mm contact body. Select this model if those dimensions and gap suit your door.

How does the 3-inch minimum operating gap affect real-world installation on a steel roll-up door?

The switch closes its loop when the magnet is adjacent and opens when pulled away, so the magnet must stay within 3 inches of the switch during normal door movement; the 30-3/4" cable with 21-1/2" armored sleeve provides reach to the alarm panel.

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