Zinc alloy normally closed or normally open door contact switch for reliable door sensing Key benefits - Durable zinc alloy housing provides sturdy, long lasting performance for door sensing in various environments - Flexible configuration: available in normally closed or normally open versions to suit different control circuits - Low current draw: rated up to 0.5 A maximum switch current, suitable for low power alarm and monitoring systems - Clear actuation range: adjusts door closer movement by approximately 40–50 mm for consistent detection - Easy installation: screw surface mount for secure mounting on doors, frames, or related hardware Specifications at a glance - Material: Zinc alloy - Configuration: Normally closed or normally open - Maximum switch current: 0.5 A - Movement effect: Approximately 40–50 mm of door closer action - Mounting: Surface-mount with screws Applications and use scenarios - Home security and smart home: door open/closed status indicators connected to alarm panels or automation systems for entry monitoring - Office and retail cabinetry: detect cabinet, closet, or display case doors to trigger lighting, alerts, or inventory tracking - Small utility doors: gate, shed, locker, or tool room doors where low current sensing is required for indicators or control logic This switch provides a straightforward, dependable door sensing solution with a compact zinc alloy body and simple screw mounting, suitable for low current signaling in security and automation setups.