STEP 352S Motor lock

Motor lock with split function, for increased intrusion security

STEP 352S motor lock is developed with world-leading technology to increase intrusion resistance in perimeter protection and create secure locking around the clock. It can be placed in door environments that are high-frequently used and combine intrusion protection, evacuation, re-entry, and fire requirements.

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 352S is built to withstand millions of openings, just as fast as an electric strike.

Unique AutomaticLatchBolt^™ increases accessibility

Thanks to the unique AutomaticLatchBolt^™, STEP 352S can be used with door automation and ensure accessibility requirements. When the door is opened electrically, the AutomaticLatchBolt^™ can be fold and thus enables opening with door automation. Immediately after the door is opened, the AutomaticLatchBolt^™ extends out and anchors itself in its position, functioning again as a classic latch bolt.

The AutomaticLatchBolt^™ can handle a high preload pressure up to 80 kg which ensures very high operational reliability.

See an animation of the AutomaticLatchBolt^™ 's function

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.

See an animation of the built-in split function

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.

For RC3-classified security doors

The demand for security is increasing, and security doors and perimeter protection have become an essential part of planning for both residential and commercial buildings. Several manufacturers today offer solutions with STEP 300 series for RC3 security doors:

• Daloc S33/Y33
• Hellbergs HD 200 series and HD 300 series (single-door version)
• Maxidoor MD63 och MDD63 

For current specifications, contact the respective door manufacturer

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.