Build or expand your security and automation setup with this 25-piece magnetic reed switch sensor set. Designed for doors, windows, cabinets, and other entry points, these wired contact sensors are ideal for alarm systems, Arduino projects, DIY electronics, and home automation applications.

Each sensor uses a normally closed magnetic reed switch design and comes in a compact white housing for a neat and simple installation. The sensors can be mounted with screws or double-sided tape, giving you flexible installation options for different projects and surfaces.

Made from durable plastic and fitted with 22 AWG wire leads, these contact sensors are suitable for a range of low-voltage applications where reliable magnetic contact detection is needed.

Ideal for Security and DIY Projects
Suitable for door and window monitoring, alarm systems, Arduino builds, and automation projects.

Normally Closed Reed Switch Design
Uses an NC contact pattern for reliable magnetic detection when installed correctly.

Flexible Installation Options
Can be mounted with screws or double-sided tape for convenience across different surfaces.

Compact and Practical Design
Small white housing allows for a clean and discreet installation on doors, windows, and frames.

Bulk 25 Piece Pack
Great for larger projects, multi-room setups, or replacement stock.

Product Specifications
Product Type: Magnetic Reed Switch Sensor
Material: Plastic
Color: White
Quantity: 25 Pieces
Switch Pattern: NC (Normally Closed)
Dimensions: 27 x 14.3 x 7.5 mm
Actuation Distance: 18 mm ± 6 mm
Wire Lead: 22 AWG, approx. 290 mm long
Maximum Switch Current: 0.5A
Contact Capacity: Maximum switch current 80mA
Mounting Method: Screws or double-sided tape
Package Includes
25 x White Door / Window Magnetic Reed Switch Sensors
Screws / mounting accessories as described
Important Notes
Please check specifications carefully to ensure compatibility with your project
Actual color may vary slightly due to lighting and screen settings
Please allow slight measurement differences due to manual measurement

25pcs Magnetic Reed Switch Door Window Contact Sensors | Wired Security Alarm Sensor for Arduino