Reed switch (magnetic contact) SATEL B-1M-BR — surface mounting, NC/NO, brown

The SATEL B-1M-BR reed switch is a surface-mount magnetic contact designed for monitoring doors and windows in alarm and security systems. It includes a sensor housing and a separate magnet; when the magnet moves away from the sensor the contact state changes. The compact, low-profile design allows installation on frames and sashes where aesthetics and minimal protrusion are required, and the brown finish blends with dark joinery.

Advantages

This magnetic contact offers selectable normally closed (NC) and normally open (NO) configurations to match different alarm-panel inputs and wiring schemes. Its surface-mount format simplifies fitting on existing frames without the need for mortising, while the small dimensions reduce visibility. The device provides reliable, mechanical switching with low power requirements and straightforward wiring, suitable for residential and commercial intrusion detection.

Suitable for

• Monitoring exterior and interior doors
• Window contact sensing for residential and commercial premises
• Perimeter and access point intrusion detection
• Integration with alarm panels and security control units

Key specifications

• Mounting type: surface-mount
• Contact options: normally closed (NC) and normally open (NO)
• Color/finish: brown
• Construction: separate sensor and magnet pair
• Typical use: door and window monitoring in security systems

How to use

Position the sensor on the fixed frame and the magnet on the moving element so that when the door or window is closed the magnet aligns with the sensor at the recommended separation distance. Route and connect the sensor leads to the alarm panel input according to the panel's wiring diagram, selecting NC or NO wiring as required by the control unit. Secure both parts with appropriate screws or adhesive as per the installation environment, and verify correct operation by opening and closing the protected element while observing the alarm panel or continuity tester.

Usage recommendations

Install the sensor and magnet on clean, dry surfaces and avoid painting over the contact to ensure proper magnetic operation. Choose NC wiring where end-of-line supervision or tamper detection is required; use NO wiring when the control system specifies a normally open input. For exterior installations, protect the device from direct exposure to severe weather or use appropriate sealing to prevent moisture ingress. Test the contact regularly as part of routine system maintenance.