CISA Revolution Pro 56.535 Lock, Mortise, Cylinder

The Cisa Revolution Pro 56.535 lock has a cylinder pull protection system. If an intruder breaks off part of the cylinder, the entire lock automatically blocks, and further manipulation for picking is impossible. This protection is two-sided. The lock has a reduction gear mechanism that ensures the smooth and easy operation of all its parts. Key turns are light and smooth. Thanks to this, the lock has a very large resource - 200,000 locking cycles. Furthermore, the reduction gear is designed in such a way that it resists various methods of forced breaking-in. It operates very quietly. The lock is equipped with a reversible latch for left-hand and right-hand door opening. When the lock is in the closed state, the latch does not engage when the handle is pressed. This allows the lock to always keep the door maximally pressed against the frame, avoiding gaps along the weatherstripping contour. In this state, the latch acts as a fifth lock bolt. There is an option to install additional rods for three-way door locking, or to install deviators. The lock is resistant to corrosion, so it can be installed on doors that are operated in unfavorable weather conditions.

Expert Review

The Cisa Revolution Pro 56.535 lock is used very often on our armored doors. Thanks to a good protective system against cylinder pull, a smooth running reduction gear, and high corrosion resistance, we recommend it to customers without any doubt as a reliable main lock. It has good indicators of resistance to various breaking-in methods and is comfortable to use, thanks to its smooth and silent operation.