The V7 electric bolt has an inverted or "normally open" operation: while the door is closed, they receive current and the bolt remains out; when pressing, the electrical flow is interrupted and the pin is hidden; when we close again, the magnet detects the closed position and activates the piston sensor, actuating the bolt and blocking the door again. The front of the piston and the frame to be installed in the frame stand out for its narrowness (22 mm) that makes the V7 suitable for all types of doors as well as being reversible. Among its uses, banks, access controls and security facilities stand out. It can be ordered with special covers for surface mounts.