Rixson SDH-5D 500 692397 Door Release

The Rixson SDH-5D 24VDC Floor Mount Single Door Holder/Release, part number 500-690397, is a floor-mounted electromagnetic device designed to hold a single door open in commercial installations and release on command. It is energized by a 24 VDC coil and holds the door until a release signal or loss of power prompts closure, making it suitable for integration with access-control systems and fire-alarm circuits. The SDH-5D is purpose-built for floor-mount, single-door applications and is commonly used on corridors and entry doors in offices, schools, and other facilities that require controlled opening with a safe, automatic release when needed. This model is part of the Norton Rixson family of door-holding solutions and complies with ANSI/BHMA A156.15 standards for door-holders/releases, reflecting established industry expectations for performance and safety. When installed, its low-profile floor-mount design minimizes trip hazards while providing reliable hold-open and release functions in environments that demand reliable door control. Designed for compatibility with standard mounting patterns and common door hardware.