MC38 Wired Door/Window Sensor — 1 pair Reliable magnetic reed switch for home alarm systems (N.C. type) — 2025 Why this sensor matters Provides a dependable, lowprofile way to detect doors or windows opening and closing. Ideal for reducing false alarms and improving overall security reliability. Wired N.C. (Normally Closed) design works with most standard hardwired alarm panels and security systems that require closedloop zone inputs. Built for precision and stable performance — engineered as a reliable electronic component to deliver consistent detection and longterm operation. Key benefits Dependable detection: Magnetic reed switch design provides accurate open/closed sensing with minimal drift. Stable and precise: Designed for reliable performance in everyday home and light commercial security applications. Ready to install: Supplied as 1 pair (sensor + magnet) with preattached wiring to connect directly to alarm zone inputs. Costeffective replacement or upgrade for existing wired alarm installations. Product features and attributes Model: MC38 Quantity: 1 pair (two pieces: contact switch and magnet) Type: Wired magnetic switch, N.C. (Normally Closed) Wire length: 330 mm (wires may be lengthened randomly as supplied) Function: Detects door or window open/close via magnetic contact separation Performance: Precision switching, stable operation for alarm systems Compatibility: Designed for use with standard hardwired home alarm systems and control panels that accept N.C. loop inputs Applications / use cases Home entry security: Mount on front/back doors or windows to trigger your alarm when a protected opening is forced or left open. Garage, shed, or outbuilding protection: Use on garage doors, shed doors, or external storage areas when integrated into a wired alarm zone. Interior zone monitoring: Monitor cabinets, server room doors, or restricted access areas inside offices or small businesses. Installation and compatibility notes Connect the two wires to an alarm panel zone that supports N.C. (Normally Closed) sensors. This product is a wired contact; confirm your control panel accepts wired magnetic contacts before installation. Wire length is approximately 330 mm; the product may be supplied with wires that are lengthened randomly. Plan for routing and secure mounting accordingly. Compact form factor allows for mounting on door/window frames and sashes where space is limited. Use appropriate fasteners or adhesive suitable for your surface (not supplied). What to expect in the package One pair (MC38) wired magnetic switch set — sensor and matching magnet with preattached wires Quality and performance 2025 design emphasizing reliable electronic component quality, precise switching, and stable daytoday performance suitable for residential and light commercial alarm applications. Compatibility checklist Hardwired alarm systems that accept N.C. contacts Zones intended for door/window magnetic sensors Systems requiring compact, surfacemount magnetic contacts For safe and effective use, verify system compatibility and test the sensor after installation to confirm correct wiring orientation and proper alarm panel response.