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STEP 351S Motor lock

STEP 351S Motor lock

STEP 351S Motor lock

STEP 352 motor lock is developed with world-leading technology to increase intrusion resistance in perimeter protection and create secure locking around the clock.

Especially designed for facilities that are unlocked during the day, but are locked in the evening even though the business continues, and where people must still be able to evacuate, such as universities.

Increases intrusion security around the clock

Thanks to its sturdy hook bolt, which anchors securely into the frame, you can trust that the door is truly locked. The hook bolt engages after every passage, even during daytime use, delivering uninterrupted intrusion protection around the clock.

Certified for intrusion protection in class 2A and 2B acc. to SSF 3522.

Handles a very high opening frequency

STEP 351S is built to withstand millions of openings, just as fast as an electric strike.

For door environments with accessibility requirements

STEP 351S is without latch bolt which means it can handle door automation/accessibility requirements.

User-friendly with built-in split function

The built-in split function enables the door to be opened mechanically from the inside, without an open button. The lock has an alarm bypass that allows "Approved passage" and gives the door environment unbeatable user-friendliness.

The split function also ensures that evacuation cannot be blocked with the exterior lever handle.

With unique FreeDrive®

The FreeDrive® technology disengages the motor and gearbox every time the lock is mechanically opened. This minimizes wear when using a thumb turn, key or emergency exit device. Locks with FreeDrive® are therefore advantageously used together with STEP Exit in doors on evacuation routes, and can be used thousands of times every day.

For door environments with fire requirements

Certified in fire technical class E/EI120 acc. to EN 14846.

For door environments with evacuation requirements

Certified for evacuation acc to. EN 179. Go to the Exitguide to find emergency devices for STEP 351S.

Control unit with smart functions

Choose between the ST300C and ST500C control units. Both use encrypted communication OSDP AES-128 for locking, unlocking and status indications.

Swedish premium quality


All our products are developed and manufactured by us in Sweden. Maximum functionality and operational reliability are features we never compromise on. By choosing STEP, you not only support Swedish technology and industry – you also choose premium-quality products that ensure long-term reliability.

Motor lock that increases intrusion security 24/7, in high-frequency used doors

STEP 351S is developed with world-leading Swedish technology. It increases intrusion security in perimeter protection and creates secure locking around the clock, without compromising other requirements. The lock is suitable for high-frequency use and can withstand several million openings. Approved in class 2A and 2B acc. to SSF 3522. With built-in split function.

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ID ST351S

Motor lock that increases intrusion security 24/7, in high-frequency used doors

STEP 351S is developed with world-leading Swedish technology. It increases intrusion security in perimeter protection and creates secure locking around the clock, without compromising other requirements. The lock is suitable for high-frequency use and can withstand several million openings. Approved in class 2A and 2B acc. to SSF 3522. With built-in split function.