10-Pack Wired Door Window Sensor, Magnetic Contact Alarm Switch, Battery-Free, NO/NC, for DIY Home Security Alarm System

10-Pack Wired Door Window Sensor, Magnetic Contact Alarm Switch, Battery-Free, NO/NC, for DIY Home Security Alarm System

• Compact and Reliable Magnetic Detection: Each sensor uses a simple magnetic reed switch mechanism to detect the opening or closing of doors and windows, ensuring consistent performance without complex electronics.
• Battery-Free and Maintenance-Free: Designed for wired integration, these sensors require no batteries and no external power, providing a true set-it-and-forget-it solution for your home security needs.
• Direct Hardwired Connectivity: The sensor features a standard wired connection that easily integrates directly into your existing wired alarm panel or DIY security control board for stable, interference-free signaling.
• Versatile NO/NC Contact Options: Equipped with both Normally Open (NO) and Normally Closed (NC) wiring terminals, these contacts offer flexible compatibility with a wide range of home alarm systems and configurations.
• 10-Piece Complete DIY Kit: This value pack includes 10 complete magnetic door and window sensors, providing ample coverage for securing multiple entry points throughout a home or installation project.