{"product_id":"smart-magnetic-door-window-contact-sensor-no-nc-alarm","title":"Smart Magnetic Door \u0026 Window Contact Sensor NO NC Alarm","description":"\u003cp\u003eKeep your home, office, garage, or warehouse more secure with the \u003cstrong\u003eSmart Magnetic Door \u0026amp; Window Contact Sensor\u003c\/strong\u003e. This compact, easy-to-install sensor detects when doors or windows are opened and instantly triggers an alert — giving you real-time awareness of entry points around your property.\u003c\/p\u003e\n\n\u003cp\u003eCrafted from durable plastic and measuring just 5.5 × 1.4 cm (approx. 2.17 × 0.55 in), this sensor is discreet enough to fit seamlessly on any door frame or window sill without taking up space or ruining your décor. Its NO (Normally Open) and NC (Normally Closed) dual-mode design makes it compatible with a wide variety of alarm systems and control panels.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual NO\/NC Output:\u003c\/strong\u003e Flexible normally-open and normally-closed contact modes for broad compatibility with alarm and access control systems.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Sensitivity Detection:\u003c\/strong\u003e Reacts quickly when the magnetic contact is broken, delivering near-instant alerts.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Discreet:\u003c\/strong\u003e Slim profile (5.5 × 1.4 cm) blends into any door or window frame without drawing attention.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Application:\u003c\/strong\u003e Ideal for homes, offices, shops, garages, warehouses, and access-controlled entrances.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurable Plastic Housing:\u003c\/strong\u003e Lightweight yet sturdy construction built for everyday reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Straightforward mounting — no complex wiring or specialist tools required.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eGreat Value:\u003c\/strong\u003e Professional-grade security functionality at an accessible price point.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Plastic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e Approx. 5.5 × 1.4 cm \/ 2.17 × 0.55 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContact Type:\u003c\/strong\u003e NO (Normally Open) \u0026amp; NC (Normally Closed)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Doors, windows, cabinets, gates\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is It For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a homeowner looking to add an extra layer of awareness, a shop owner monitoring store entrances, or a facilities manager overseeing garage and warehouse access, this magnetic contact sensor delivers dependable, straightforward monitoring where you need it most. It also makes a thoughtful, practical gift for anyone interested in smart home security upgrades.\u003c\/p\u003e\n\n\u003cp\u003eFor more guidance on home security best practices, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer safety tips and product standards.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the Smart Magnetic Door \u0026amp; Window Contact Sensor do?\u003c\/h4\u003e\n\u003cp\u003eA: This magnetic contact sensor monitors doors, windows, cabinets, and gates. When the two sensor halves are separated — meaning the door or window has been opened — the circuit state changes (NO or NC), triggering your connected alarm or alert system. It provides real-time awareness for homes, offices, shops, garages, and warehouses.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between NO (Normally Open) and NC (Normally Closed) modes?\u003c\/h4\u003e\n\u003cp\u003eA: In Normally Open (NO) mode, the circuit remains open when the magnet is in contact and closes (completing the circuit\/triggering an alert) when separated. In Normally Closed (NC) mode, the circuit is closed when the magnet is in contact and opens when separated. This dual-mode design ensures compatibility with most standard alarm control panels and security systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the sensor made of and how big is it?\u003c\/h4\u003e\n\u003cp\u003eA: The sensor is constructed from durable plastic and measures approximately 5.5 × 1.4 cm (2.17 × 0.55 in), making it compact and easy to mount on virtually any door frame or window sill.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this sensor easy to install?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. Installation is straightforward — simply mount one half of the sensor on the door or window frame and the other on the moving part (door\/window sash). Connect the wires to your alarm or access control system according to your panel's NO or NC input requirements. No specialist tools are needed.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the Smart Magnetic Door \u0026amp; Window Contact Sensor do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This magnetic contact sensor monitors doors, windows, cabinets, and gates. When the two sensor halves are separated — meaning the door or window has been opened — the circuit state changes (NO or NC), triggering your connected alarm or alert system. 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