Wired door/window sensor SATEL B-4M — metal housing, 100 V input, 78.5×29×54.5 mm

The SATEL B-4M wired door/window sensor in a metal housing is designed for perimeter protection in security and access control systems. It provides a robust, surface-mounted magnetic contact suitable for monitoring doors, windows, gates and other access points. The metal enclosure shields the wiring and contact elements from mechanical damage and attempted sabotage while the wired connection ensures stable signaling to alarm panels and control units. The unit accepts a 100 V input and has compact dimensions of 78.5 × 29 × 54.5 mm, making it suitable for installations where a durable, tamper-resistant contact is required.

Advantages

The metal housing increases mechanical strength and protects internal wiring from external impacts and tampering, improving long-term reliability in demanding environments. Wired connection provides consistent, low-latency signaling to alarm and access control systems, avoiding issues related to battery replacement or radio interference. Surface mounting with screw fixation ensures stable placement on doors, gates or frames, and the compact footprint enables installation in confined spaces such as garage gates or industrial doors.

Suitable for

• Wired alarm panels and security systems
• Surface-mounted doors, windows and garage gates
• Locations with increased risk of mechanical exposure or sabotage
• Commercial and residential perimeter protection

Key specifications

• Form factor: surface-mounted wired magnetic contact
• Housing material: metal, tamper-resistant enclosure
• Power input: accepts 100 V supply
• Dimensions: 78.5 × 29 × 54.5 mm
• Connection type: wired contact for direct integration with alarm panels
• Suitable mounting: screw fixation for secure installation

How to use

Mount the SATEL B-4M on the surface of the door, window frame or gate using the provided screw holes, aligning the magnetic elements to ensure proper contact when closed. Route and secure the wiring inside the metal housing to protect it from damage, then connect the contact wires to the alarm panel or control unit according to the installer’s wiring diagram and the panel’s input specifications. Verify correct operation by closing and opening the protected element while monitoring the panel for signal changes. Ensure the 100 V supply is applied only where the installation documentation or system design specifies such input voltage.

Usage recommendations

For reliable operation, use the SATEL B-4M in installations where a sturdy, tamper-resistant wired magnetic contact is required. Regularly inspect mounting screws and housing integrity in high-vibration or high-traffic locations, and verify wiring insulation to maintain continuous contact signaling. When used on garage gates or external doors, ensure the mating magnet is aligned and protected from debris to prevent false alarms.