Magnetic contact sensors pack of 5 for door and window alarm applications. These wired reed switches provide clear open and closed detection and support both Normally Open and Normally Closed configurations and common DC voltages for flexible installation. Key benefits Flexible wiring options: Supports Normally Open and Normally Closed contacts so you can match the sensor to the logic of your alarm panel or automation controller. Multivoltage compatibility: Operates at DC5V, DC12V, and DC24V for use with a wide range of security systems and control modules. Straightforward detection: Reliable magnetic reed switch design detects door or window movement to trigger alarms, lights, or automation routines. Ready for multiple locations: Pack of 5 lets you protect several doors or windows, or keep spares for maintenance. What this product does for you Simplifies integration with wired alarm panels and automation controllers that accept NO or NC inputs and DC supply voltages listed above. Delivers consistent open or closed state reporting for faster, more reliable alarm or automation responses. Reduces installation time when deploying sensors across multiple entry points thanks to the multipack. Technical highlights Contact type: Normally Open and Normally Closed selectable or available wiring options Voltage compatibility: DC5V, DC12V, DC24V Quantity: Pack of 5 magnetic contact sensors Typical use: Door and window status detection for alarm and automation systems Practical applications Home security: Install on entry doors and groundlevel windows to detect unauthorized openings and trigger your alarm panel. Small business and retail: Monitor display cases, back doors, or stockroom entrances for access alerts and inventory protection. Automation and access control: Use with lighting or control systems to turn lights on when a door opens or to log door open events in access systems. Installation notes Designed for surface mounting on typical door and window frames; wire to your alarm or controller following its NO or NC input requirements and rated DC voltage. For results, place the magnet and contact aligned so the switch reliably changes state when the door or window moves. This pack delivers basic, dependable magnetic contact sensing in a convenient fivepiece set for multiple entry points and simple integration with wired security and automation systems.