GK231-L / GK231-R / FR-GK231-L / FR-GK231-R Electric Release Lock (Rim Strike)

The GK231 Series Electric Release Lock is a compact electric strike designed for use with access control systems, door entry systems, intercoms, and electronic locking applications. Suitable for commercial, industrial, educational, healthcare, and public sector environments, it provides reliable remote door release whilst maintaining secure access control.

An electric strike, also known as a rim strike, electric release, or latch release, is installed within the door frame and operates in conjunction with a compatible lock or latch. When activated, the strike mechanism releases the latch, allowing the door to be opened without manual unlocking. Once the door closes, the latch automatically re-engages to restore security.

Manufactured from durable stainless steel, the GK231 Series offers fail-safe operation, a holding force of up to 1500lbs, and side load resistance of up to 500lbs. The range is available in both left-hand and right-hand configurations to suit different door and frame arrangements. FR-GK231 fire-rated versions are also available for compatible fire door applications.

The FR-GK231-L and FR-GK231-R fire-rated versions are designed for compatible fire door installations and are supplied with a 1-hour UK fire certificate.

Available Models

• GK231-L - Left Hand Electric Release Lock (Rim Strike)
• GK231-R - Right Hand Electric Release Lock (Rim Strike)
• FR-GK231-L - Fire Rated Left Hand Electric Release Lock (Rim Strike)
• FR-GK231-R - Fire Rated Right Hand Electric Release Lock (Rim Strike)

Key Features

• Electric release lock (rim strike)
• Operating voltage 12VDC or 24VDC
• Fail-safe operation
• Holding force up to 1500lbs
• Side load resistance up to 500lbs
• Fire resistant construction
• 1-hour UK fire certificate
• Available in left-hand and right-hand versions
• Fire-rated versions available
• FR models supplied with 1-hour UK fire certificate
• Stainless steel construction
• Suitable for access control systems
• Reliable remote door release operation
• Compact design

Typical Applications

• Access control systems
• Door entry systems
• Intercom systems
• Commercial buildings
• Office entrances
• Educational facilities
• Healthcare environments
• Public buildings
• Staff access doors
• Security-controlled doors

Compatibility

The GK231 is designed to integrate with a wide range of access control and door security equipment.

• Access control systems
• Door entry systems
• Intercom systems
• Rim locks
  
• Keypad entry systems
• Proximity card readers
• Building management systems
• Power supplies
• Door monitoring systems
• Security control systems

Technical Specification

• Product Type: Electric Release Lock (Rim Strike)
• Operating Voltage: 12VDC or 24VDC
• Operation: Fail-Safe
• Latch Throw: 15mm
• Holding Force: Up to 1500lbs
• Side Load Resistance: Up to 500lbs
• Handing: Left-Hand or Right-Hand
• Fire Certification: 1-Hour UK Fire Certificate (FR Models Only)
• Fire Testing: BS EN 1634-1 (FR Models Only)
  Fire Door Suitability: Compatible FD30 and FD60 fire doors (FR Models Only)
• Construction: Stainless Steel
• Dimensions: 141mm x 23mm x 40mm (H x W x D)

GK231 Product Information

FR-GK231 Product Information

GK231 Series Handing Guide

The GK231 Series Electric Release Locks provide a reliable and compact door release solution for access control installations requiring fail-safe operation, high holding force, and left-hand or right-hand configuration options. Manufactured from durable stainless steel and capable of operating under side loads of up to 500lbs, the range is suitable for demanding commercial and industrial door security applications. FR-GK231 fire-rated versions are also available for compatible fire door installations requiring certified fire-resistant performance.

Frequently Asked Questions

What is the GK231 used for?

The GK231 is used to provide remote door release in access control, door entry, and intercom systems whilst maintaining secure locking.

What is a rim strike?

A rim strike, also known as an electric release lock or latch release, is installed in the door frame and releases a compatible latch when activated electronically.

Is the GK231 available in different handing options?

Yes. The GK231 is available in both left-hand and right-hand versions to suit different door and frame configurations. Please select the appropriate handing when ordering.

What is the difference between the GK231 and FR-GK231 versions?

The GK231-L and GK231-R are the standard left-hand and right-hand electric release locks. The FR-GK231-L and FR-GK231-R are the fire-rated versions, designed for compatible fire door applications and supplied with a 1-hour UK fire certificate.

Is the GK231 fail-safe?

Yes. The GK231 is a fail-safe electric release lock, meaning it releases when power is removed.

What voltage does the GK231 operate on?

The GK231 operates on either 12VDC or 24VDC power supplies.

What holding force does the GK231 provide?

The GK231 provides a holding force of up to 1500lbs.

What is the side load rating?

The strike can operate under side loads of up to 500lbs.

Are fire-rated versions of the GK231 available?

Yes. The FR-GK231-L and FR-GK231-R are fire-rated versions designed for compatible fire door applications and supplied with a 1-hour UK fire certificate.

What material is the GK231 manufactured from?

The GK231 is manufactured from durable stainless steel for long-term reliability.