Best Industrial Door Security Sensors

1. WESUA Magnetic Switch Alarm Sensor Overhead Garage Door Contacts with L Bracket

The WESUA Magnetic Switch Alarm Sensor is a sturdy and reliable solution for securing overhead garage doors. Its alloy zinc case and metal tube protection ensure durability, while the epoxy sealed waterproof design keeps it safe from the elements.

It’s adjustable with an L bracket, fits most door channels, and is easy to install. Perfect for industrial and residential use, it works well where a wide gap is present.

2. Magnetic Door Switch RC-33 NC Recessed Wired Security Window Door Contact Sensor Alarm White- (5 Sets)

The Magnetic Door Switch RC-33 is a reliable security sensor for doors and windows. It comes in a set of five, perfect for multiple entry points. Its white ABS housing blends seamlessly with most setups.

This normally closed (NC) switch works simply. When the magnet is together, the circuit is on (light on). When separated, the circuit is off (light off). It’s easy to install and use.

With a 15-25mm actuation distance and 110V max voltage, it’s built to last. Each unit weighs just 36g, making it lightweight yet durable. Ideal for home or office security.

3. Exit Door Alarm with 110dB Siren,Commercial Emergency Exit Security Device,Battery Powered Magnetic Sensor, Easy Installation,Ideal for Warehouse,Office,Retail,Industrial Exit Safety

This exit door alarm keeps your space secure with a loud 110dB siren. It’s battery-powered and easy to install anywhere.

No wiring is needed, so setup takes just minutes. Use adhesive pads or screws for quick mounting. It’s perfect for busy areas like warehouses or offices.

The durable design handles heavy use. One 9V battery lasts over a year. Everything you need is included in the kit.

4. GAGALOR 4 Sets NC Wired Door Alarm Magnetic Contact Sensor with Double Side Tape

The GAGALOR 4 Sets NC Wired Door Alarm is a reliable security solution. It comes with double-side tape for easy installation. The white case blends well with most doors and windows.

It works with 22-28 AWG wires and has a normally closed (NC) switch. The switch stays closed when the door is closed, ensuring accurate alerts.

With over 1/2 inch operation distance, it fits most doors and windows. The quality design makes it a dependable choice. Keep your space secure with this simple, effective system.

5. Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm Magnetic Reed Switch Black, Magnetic Door Sensor, Normally Closed Magnetic Switch

The Gebildet 5pcs Recessed Wired Security Window Gate Contact Sensor Alarm is a reliable magnetic door sensor. It’s compact and easy to install, making it perfect for home or office use.

This sensor has a sensing distance of 10mm-15mm and a long service life of 1,000,000 times. It works with a low current of 0.5A and a voltage range of 1-100V.

The wire length is 33cm, giving you flexibility in placement. Its black design blends well with most setups. It’s a simple yet effective security solution.

6. Exit Door Alarm with 110dB Siren, Emergency Exit Security Device, Easy Installation, Battery Powered, Magnetic Sensor for Unauthorized Entry Prevention, Home, Warehouse, Office, Retail Use

The Exit Door Alarm keeps your space safe and secure. It alerts you instantly with a loud 110dB siren if someone opens the door without permission. Perfect for homes, offices, or stores.

Easy to install, no wires needed. Just attach the alarm to the door frame and the magnet to the door. Use adhesive or screws—both are included.

The battery lasts over a year and is simple to replace. The compact design fits anywhere, making it versatile for any setting. Get peace of mind right out of the box.

7. 6 Sets Magnetic Reed Switch MC-32 NC Surface Mount Wired Security Door Window Alarm Door Window Contact Sensor for Home Security Burglar Alarm Systems (White)

Secure your home with the 6 Sets Magnetic Reed Switch MC-32. It detects door or window openings instantly. Works with wired or wireless alarms.

Easy to install with included screws. No tools needed. Works best with a 15–25mm gap between switch and magnet.

Durable ABS housing resists fire and lasts long. White finish blends with any decor. Perfect for DIY security upgrades.

8. WESUA 5 Pack NC Magnetic Switch Contacts Door Sensor for Home Alarm Security System

The WESUA 5 Pack NC Magnetic Switch Contacts Door Sensor is a simple and effective solution for your home or business security needs. These magnetic contacts are easy to install and work with any wired burglar alarm system.

They look neat and tidy, with hidden screws for a clean finish. Great for doors and windows, they come with mounting screws included. Perfect for family or factory use.

9. Gebildet Home Security Wired Rolling Door Contact Magnetic Reed Switch MC-58 Alarm Sensor Magnetic Switch with 2 Wires for N.C. Applications

The Gebildet Home Security Wired Rolling Door Contact is a reliable magnetic reed switch. It works with door and window alarm systems. This N.C. (Normally Closed) switch is easy to install.

It has a durable zinc alloy housing for rust resistance. The cable length is 35cm, and the total size is compact. Perfect for garages, warehouses, and shops.

The action distance is 30~50mm, and it handles 0.5A current and 100V voltage. When the magnet separates, the circuit turns off. A simple, effective security solution.

10. MC-33C Normally Closed Recessed Window Door Contact Sensor Alarm Magnetic Reed Switch – (2 Sets)

The MC-33C is a normally closed magnetic reed switch designed for door and window security. It comes in a 2-set package, perfect for anti-theft alarms.

Easy to install, it features small screw terminals for simple wiring. Works with metal doors and windows seamlessly. Terminal block style ensures a reliable connection.

Normally closed means the circuit is on when the magnet is together. When separated, the circuit turns off. Ideal for commercial and residential security systems.