Overview: SL-M180 is a single door magnetic lock, it is designed for Wooden doors, glass doors, metal doors and easy to install. Accessories are available for inward door, frameless glass door and narrow door-frame door. Special anti-residual magnetism designed. The design of magnetic locks)Electromagnetic lock) is the same as the electromagnet, By using the principle of electromagnetic, when current passes through the silicon steel sheet, magnetic locks will produce powerful suction, thereby help to tightly absorb iron plate. Even Small current will produce huge magnetic force, which can effectively control the door. Advantage: 1. 180 KG (390lbs)static linear pulling force. 2. Double coil, 12V and 24V optional. 3. Detection output optional. 4. Suitable for 90 degrees opening door. 5. Anti-residual magnetism design, using anti-wear materials. 6. BMC injection molding machine die-casting for lock body. 7. Professional customized silicon steel sheet, Special processing for entirety and annealing. 8. Shell with high strength alloy material, anodized hardening treatment. 9. Electromagnetic suction working completely, no mechanical fault. 10. Double lock body insulation treatment. 11. CE certification and the Ministry of Public Security MA test report.