Innovative locking system, with a "rotary hook deadbolt". Pull resistance of up to 2000 kg. Excellent vibration resistance and impact strength (patented system) Protective steel case totally enclosing the lock and striker. Elettrika is non handed (patented system) and with a variable backset from 50 to 80 mm (patented system). Elettrika is fitted with a new type of self-adjusting "swinging rod" striker, active both vertically and horizontally (patented system). The rotary hook deadbolt of Elettrika can be operated in two different modes (patented system). Automatic opening: the door is set open by the deadbolt rotation. Ready to open: the deadbolt is withdrawn but the door remains in closing position. Elettrika is interchngeable with all the types of lock available in the market. The innovative reloading system ensures silent opening and closing operation. The gate rebound effect is reduced. the hold open device (when selected) allows to block the lock in its open position. Rated voltage 12vAV (3 amp). Weld-on Backplate Included. Inside Cylinder can block push button. Hold Open Device.