[AUTOMATIC DOOR CONTROL] Featuring an intelligent electromagnetic design that operates on a 24V power supply, this door holder automatically demagnetizes to secure the door closed during power outages, safeguarding against potential fire threats. [ ZINC ALLOY MATERIAL] Built to last, the door holder is made from robust zinc alloy, providing a substantial 55Kg suction force that ensures reliable performance and peace of mind in fire safety and everyday use. [ATTRACTIVE AND FUNCTIONAL DESIGN] The silver finish and fine craftsmanship of this electromagnetic door holder make it a striking addition to any space, merging safety and style seamlessly, enhancing the overall aesthetic of your home or office. [LONG-LASTING PERFORMANCE WITH COPPER COILS] Equipped with pure copper coils, this door holder is designed for optimal conductivity and durability. Experience a device that not only functions effectively but also has a prolonged service life and reliability. [COMPREHENSIVE, Manufacturer: Jelquix