Magnasphere Corp MSS-201C-WHT-FIRE Recessed Contact

Product Description

The MAGNASPHERE CORP MSS-201C-WHT-FIRE is a recessed magnetic contact designed for fire alarm and security detection systems. This normally-closed contact ships with 12-inch leads and mounts in a standard 3/4-inch diameter bore, making it a direct-fit option for door and window frame installations. The white finish blends with light-colored door frames and trim. Installers use this type of recessed contact to monitor the open or closed state of a door or window, triggering an alarm circuit when the magnetic field is broken. It is sold individually as a single unit.

Recessed contacts in this class are used in commercial and residential fire alarm and intrusion detection systems. The 3/4-inch recessed form factor is a widely accepted standard in new construction and retrofit installations where surface-mounted hardware is not acceptable for aesthetic or code reasons. The normally-closed circuit configuration is standard for supervised fire alarm loops, where a broken circuit indicates a fault or alarm condition. This contact is suited for installation in wood, hollow-metal, or aluminum door frames.

Key Features

• 3/4-inch recessed mounting diameter fits standard bored holes in door and window frames
• Normally-closed contact configuration compatible with supervised fire alarm and security loops
• 12-inch pre-attached leads for direct connection to panel wiring without additional splicing at the contact
• White finish suitable for light-colored frames and trim
• Single-unit packaging for individual replacement or new-point installation

Compatibility

Designed as an OEM-style recessed contact for fire alarm and security detection systems requiring a normally-closed 3/4-inch recessed magnetic contact with lead-wire termination.

Installation Notes

Installation should be performed by a licensed fire alarm or low-voltage technician in accordance with NFPA 72 and applicable local codes. De-energize and disable the alarm panel zone before connecting or disconnecting contacts. Use a 3/4-inch spade bit or hole saw to bore the mounting cavity to the correct depth per the manufacturer specification sheet. Verify polarity and loop supervision requirements at the panel before returning the zone to service.