STEP 551 is a powerful and fast motor lock for door environments with high demands on safety.
The technical advanced hook bolt is extremely strong, fast and withstands great stresses. The lock case is made of stainless steel and has a modern bolt placement with the hook bolt located in the center of the lock case.
STEP 551 is adapted for use in door environments with the absolutely toughest intrusion protection requirements. Certified in Class 5 according to SSF 3522, and in Grade 7 according to SS-EN 14846.
Manipulation protected block function
A patent-pending block function automatically block the hook bolt when locked. At the same time, an indication locates the blocks position so you can trust that it really is locked. The block function is completely protected from access and thus ensures protection from manipulation.
Control unit with many smart features
The control unit uses encrypted communication AES- 128 for locking, unlocking and status indications. It can handle up to two motor locks. These can be controlled individually or synchronized for connection to access control systems, alarms and essential function. The control unit handles re-entry and day locking.
For door environments with night locking
Motor lock STEP 551 is without latch bolt and fits well as a secure night lock with the motor lock placed as an extra lock. At the end of the working day, the motor lock can secure the room as a night lock connected to a so-called essential function. Depending on the selected day lock, the motor lock also fits well with door automation.
With unique FreeDrive® technology
The FreeDrive® technology disengages the motor in both locked and unlocked positions, allowing the lock to be independently used electrically and mechanically.
Se the motor lock movie
Outstanding use in emergencysituations
STEP Exit emergency device
STEP 551 in combination with STEP Exit emergency devices gives you the opportunity to create a safer evacuation exit with unmatched user-friendliness because the pressure is used in exactly the same way as in a normal passage.
FreeDrive® technology gives the products unmatched longevity
STEP 551 is equipped with FreeDrive®. The unique technology disengages the engine and gearbox, which means that they are never affected when the the evacuation device handle is used. This eliminates the wear of the engine and gearbox completely – even though the handle may be used thousands of times every day.