VIV-500A 500KG Single Door EM Lock

500kg Holding Force Magnetic Lock – 500kg (1200lbs) holding force magnetic lock is for single or double heavy door, such as metal door, wooden door, fireproof door, sliding door and so on. It is suitable for the card reader which is without time delay, or opened directly by inside control. Special anti-residual magnetism designed makes the access control automation safer and electric lock more durable