Magnet Door Hold Open Wall Mounted 24V DC Test SwitchThis 24V DC Wall Mounted Magnetic Door Holder is a compact and durable solution for safely holding fire doors open in compliance with fire safety standards. Designed with a robust, fire resistant ABS plastic casing and approved to EN1155 standards, this unit is ideal for use in schools, hospitals, offices, and other commercial or public buildings. With a powerful 200N (20kg) holding force and zero residual force, it ensures doors are securely held