HIKVISION DS-K4H258D Value Series Double Door Magnetic LockThe DS K4H280D two door magnetic lock is designed for wooden door, glass door, and steel door with the opening angle of 90. The maximum thrust of the lock is 280kg(550Lbs)x2. It can be used for controlling door opening closing, and the indicator shows the door status. Available Model DS K4H258D MAIN FEATURES The magnetic lock supports static linear thrust of 280kg(550Lbs)x2; Default voltage is 12VDC; It is equipped with internal voltage dependent