Opera Wall Mounted Hold Open Electro Magnet 24V DC Satin AluminiumEnsure safety and compliance with the Opera Wall Mounted Hold Open Electromagnet, specifically designed to secure fire doors in public areas. With a holding force of 55kg and a heavy duty steel construction, this unit is ideal for swing fire doors in commercial, institutional, and industrial environments. The magnet securely holds the door open under normal conditions and automatically releases it in the event of a fire alarm signal. Finished in sleek