Alarm Controls brings trusted door control to a new category with the Magnetic Hold Open (MHO) Series. Designed for commercial buildings, the MHO helps keep doors open for convenience and smooth traffic flow, then automatically releases to support life-safety requirements. Key features include 35 lbs of holding force, built-in voltage spike suppression, UL 10C certification, and tri-voltage flexibility. Available in surface- and wall-mounted configurations, with a growing range of accessories, the MHO adapts to a variety of applications and installation scenarios.