Features 1,132.3lb Holding Force: This electromagnetic lock has excellent rholding force of 132.3 pounds (60 kg), strong suction is able to reliably lock the door and withstand up to 60 kg of weight. 2,12V DC Power Supply: The portable small magnetic lock can be powered by 12V DC power supply to ensure stable and sustainable use, energy saving. 3,Circular Suction Lock: Electromagnetic lock with a unique circular design, more compact, more beautiful and practical, suitable for various door types. 4,Material: The electromagnetic lock is designed with aluminum alloy and iron. Solid and reliable, strong suction, not easy to rust, ensures a long service life. 5,Wide Application: It is suitable for electric doors to achieve automatic opening and closing function, and is widely used in residential and commercial places. Specification Item Type: Electromagnetic Lock Material: Aluminum alloy and iron Product Size: Approx. 10 x 6 x 5cm or 3.9 x 2.4 x 2in  Application: For automatic door, For 12V24V The door will be closed when power is on when power off, the door will open. Package List 1 x Pair of Electromagnetic Door Suction 1 x Screw Pack Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.