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Five white rectangular magnetic reed switches with cables and adhesive backing

Unique-Bargains

Unique-Bargains 5 Pcs Door Window Magnetic Switch NO Normally Open Control Sensor

SKU CH-BAKY-FGZAB

Five magnetic reed switches trigger an alarm circuit when a door or window opens beyond 15 mm

  • TypeHome Automation - Sensor & Accessories
  • Normally open circuit closes only when magnet approaches for precise detection
  • 15 mm actuation distance covers standard door and window gaps
  • 38 cm cable length allows flexible routing to alarm panel
  • Double-sided tape included for screw-free mounting on frames
  • Compact 2.7 x 1.5 x 0.8 cm size fits narrow profiles

Five-Pack Magnetic Door Window Sensor

This pack supplies five normally open reed switches for wiring into home alarm or automation circuits. Each unit closes its contact when a magnet comes within 15 mm, signalling an open door or window. The sensors suit residential and light commercial installations where simple magnetic detection is required.

Double-Sided Tape and Pre-Wired Leads

Every switch ships with adhesive backing for screw-free mounting on frames or sashes. A 38 cm two-core cable exits the body, removing the need to solder joints at the sensor. The 3.5 mm mounting holes on 1.7 cm centres allow optional screw fixing if preferred.

Low-Voltage 100 V 10 W Switching Capacity

The contacts are rated for 100 V and 10 W, adequate for typical alarm panel inputs and low-power relay coils. They are not suited for mains-voltage loads or high-current switching. The 2.7 x 1.5 x 0.8 cm body fits narrow door edges, but the 15 mm actuation gap demands precise magnet alignment.

Highlights

  • Normally open circuit closes only when magnet approaches for precise detection
  • 15 mm actuation distance covers standard door and window gaps
  • 38 cm cable length allows flexible routing to alarm panel
  • Double-sided tape included for screw-free mounting on frames
  • Compact 2.7 x 1.5 x 0.8 cm size fits narrow profiles

Specifications

BrandUnique Bargains
TypeHome Automation - Sensor & Accessories

Questions about this item

How often will the 38 cm cables or the adhesive tape need replacing on the magnetic switches?

The 38 cm cables are fixed; the double-sided tape may lose grip over time and can be replaced with any suitable adhesive.

What is the maximum 15 mm actuation distance before the reed switch stops detecting the magnet?

The switch closes the circuit only while the magnet stays within 0 to 15 mm; beyond that the contact opens again.

How much heat or power does each sensor draw when the alarm system runs continuously?

Each unit is rated at 10 W at 100 V, so heat output is minimal and power draw stays at that level while the circuit is closed.

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