NBS Source
I'm a manufacturer
Compare variants

Mechanical 1-way SOS (Staff Override System) Lockset

Verified by manufacturer 11 days ago

PR1

Safehinge Primera Variant:

Anti-ligature, mechanical one-way SOS (Staff Override System) lockset.

Jump to:
+44 (0)330 0580988 Website

Application

Suitable for lower risk doors or staff areas where tampering is unlikely, or as a 'lock-off' function.

Description

Anti-ligature, mechanical lockset with one-way SOS (Staff Override System), providing a key override method. The key operates the lock independently of the internal turn-pull so staff can unlock the door even if the internal turn-pull is being held.

Features and benefits:

  • Direct mechanical override as the lock and the internal turn-pull mechanism operate independently, allowing staff to open doors, even when service users hold the turn-pull mechanism.
  • Provides rapid access.
  • Avoids the issues associated with clutch and geared cylinders in challenging environments.
  • Anti-wrench, anti-tamper and robust, with concealed fixings.
  • Has fire-resistant casing to BS EN 1634-1.
  • CE-marked to BS EN 12209.
  • All locksets are identified by simple to understand product codes that indicate the override type, the application, the handle type and the finish. Consult manufacturer for details.

General information

Color

Gold

Silver

Finish

Satin

Material

Steel

Guidance for specification option:

  • Handle and turn-pull dish: Die-cast (Mazak 5) handle with electro-plated satin stainless steel finish.
  • Flat backplate: 3 mm chamfered steel with electro-plated satin stainless steel finish.
  • Roller bolt deadlock: Steel.
  • Night latch: Steel.

Shape

Other

Height

77 mm

165 mm

Uniclass

Pr_30_36_08_36 Door locksPrimary

CAWS

P21/530 Special function door locks

P21/170 Ironmongery for fire doors

P21/515 Door locks

P21/24 Door locks

SKU Code

PR1, PRLL

Product range

Locksets

Specification data - Door locks

Standard

To BS EN 12209 and BS EN 1634-1.

Lock type

Auto-locking automatic night latch lockset, handle inside (66), key/ turn.

Guidance for specification option:

  • Door will automatically lock when closed, suitable for 'off-limit' areas.
  • Anyone can unlock from inside.

Auto-locking automatic night latch lockset, keyed inside (86), key/ key.

Guidance for specification option:

  • Door will automatically lock when closed, suitable for 'off-limit' areas, dispensary and link doors.
  • Key required to unlock on both sides.

Roller latch with dead bolt, service riser lockset (16), key/ none.

Guidance for specification option:

Designed for service risers and cupboards where no handle is required internally.

Roller latch with dead bolt, bedroom lockset (46), key/ turn.

Guidance for specification option:

For patient privacy, with a turn-pull to lock/unlock.

Roller latch with dead bolt, indicator lockset (56), key/ turn.

Guidance for specification option:

  • With internal turn-pull (PR1).
  • Indicates when a patient has locked their door from inside.

Roller latch with dead bolt, en-suite lockset (76), key/ none.

Guidance for specification option:

  • With external lock-off function and no internal lock.
  • Enables staff to restrict access to the en-suite.

Roller latch with dead bolt, communal lockset (96), key/ key.

Guidance for specification option:

Keyed to both sides, using a roller catch to hold the door closed when unlocked.

Backset

83 mm.

Material and finish

Die-cast steel (Mazak 5), electro-plated satin stainless steel finish.

Guidance for specification option:

Handle and turn-pull dish.

Manufacturer guidance

  • Flat backplate: 3 mm chamfered steel with electro-plated satin stainless steel finish.
  • Roller bolt deadlock: Steel.
  • Night latch: Steel.


Fasteners for hardware

As supplied.

Locking arrangement

Key/ turn-pull.

Key/ key.

Handle type

Elephant's Trunk (730).

Grab handle (731).

Pinch grip (729).

Guidance for specification option:

Standard.

Manufacturer guidance

Handles are usually on the corridor side – consult manufacturer for details.

Handle backplate type

One-piece plate (C).

Radius escutcheon plate (AEP).

Radius flat plate (A).

Guidance for specification option:

Standard.

Turn-handle

Oryx lever handle (724LP).

Guidance for specification option:

  • Makes door opening easier for those with poor grip or hand coordination.
  • Suitable for the infirm or elderly, it looks more like a normal lever handle, so is easily recognized by service users with dementia.
  • Anti-ligature rating: TS001, B4.

Turn-pull handle (728).

Guidance for specification option:

  • Standard.
  • Robust, with no visible fixings.
  • Used to operate the lock on the inside of bedroom doors for privacy.
  • Anti-ligature rating: TS001, A4.

Manufacturer guidance

Can be upgraded to the Oryx lever, dependent on lock type – consult manufacturer for details.

Fixing

Pin-torx anti-tamper stainless steel security screws.

Height:

165 mm.

Guidance for specification option:

Automatic Night Latch lockset, handle inside (66), Automatic Night Latch lockset, keyed inside (86), Bedroom lockset (46), Communal lockset (96), En-suite lockset (76), Indicator lockset (56).

77 mm.

Guidance for specification option:

Service riser lockset (16).

Manufacturer guidance

Lockcase.

Depth:

103 mm.

Guidance for specification option:

Automatic Night Latch lockset, handle inside (66), Automatic Night Latch lockset, keyed inside (86), Bedroom lockset (46), Communal lockset (96), En-suite lockset (76), Indicator lockset (56).

102 mm.

Guidance for specification option:

Service riser lockset (16).

Manufacturer guidance

Lockcase.

Cylinder

Standard euro-cylinder.

Guidance for specification option:

Suitable for master key systems.

Locking system

Primera mechanical one-way SOS (Staff Override System) lockset.

Sustainability data

Material

Steel

Guidance for specification option:

  • Handle and turn-pull dish: Die-cast (Mazak 5) handle with electro-plated satin stainless steel finish.
  • Flat backplate: 3 mm chamfered steel with electro-plated satin stainless steel finish.
  • Roller bolt deadlock: Steel.
  • Night latch: Steel.

Literature

Door Components for Mental Health brochure

Door Components for Mental Health brochure

CPD materials

Together, We Design for Good

Together, We Design for Good

Case studies

1-way SOS locksets - Ancora House (Mental Health, CAMHS)

1-way SOS locksets - Ancora House (Mental Health, CAMHS)

Similar products from Safehinge Primera

Electronic Lockset with Mechanical Over-Ride

Electronic Lockset with Mechanical Over-Ride

Mechanical 5-way SOS (Staff Override System) Lockset - Anti-barricade Lockset

Mechanical 5-way SOS (Staff Override System) Lockset - Anti-barricade Lockset

© 2025 Hubexo North UK Ltd. All rights reserved.