Eff Eff Access Control
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Eff Eff Access Control

As a pioneer in electromechanical locking, Eff Eff (an ASSA ABLOY brand) is renowned for manufacturing high-quality, reliable electric strikes and mortice releases. This collection provides versatile solutions to integrate physical doors with modern access control systems, intercoms, or push-button entry.

Our range of Eff Eff mortice releases caters to various door types and duty requirements:

  • Standard & Medium Duty: The 14 & 34 Series and 75 Series offer dependable low-to-medium duty performance, with continuously rated 12V DC operation and adjustable jaw options for precise alignment.
  • UPVC Applications: The 17 Series is specifically designed for UPVC doors, featuring an adjustable jaw and a continuously rated design to maintain a secure seal.
  • Heavy Duty & Monitored: The 76 Series Penta provides a robust, heavy-duty solution with dual-voltage capability, monitoring, and field-selectable fail-locked or fail-unlocked operation.

Whether upgrading a commercial entrance or securing a residential property, Eff Eff's precision-engineered releases ensure seamless integration and long-lasting security.

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Brand Connections

Assa Abloy logo

Assa Abloy

Parent company

Eff Eff

effeff (often written EFF EFF) is a German electromechanical door-hardware brand best known for basically inventing the modern electric strike—the little powered latch mechanism that lets a door be released by a button, intercom, or access-control system without replacing the mechanical lock.

  • Origins: effeff began in 1936 as a precision/electrical engineering workshop in Germany (founded by Fritz Fuss). 

  • Big invention: ASSA ABLOY’s own materials state that electric strikes were invented and patented by effeff in 1947, which is why “effeff strike” is almost a generic term in some trade conversations. 

  • What they make: a full electromechanical range including electric strikes, electric bolts/dropbolts, security locks and related escape route / egress components—designed to bridge mechanical locking with access-control systems. 

Ownership / group: effeff is part of ASSA ABLOY (ASSA ABLOY announced the acquisition of German effeff Fritz Fuss KGaA in 1999). 

Signature product DNA (why installers like them):

  • Wide strike selection for different door types and install situations (“appropriate strike for every installation location” is literally their pitch). 

  • Lots of practical installer features on popular models—e.g., adjustable keep designs and system-friendly variants like the 118E family.

Access Control

Secure and monitor your premises with our comprehensive range of access control systems, designed to manage authorised entry for both commercial and residential properties. Our extensive selection includes everything from standalone mechanical digital locks that require no power source to advanced electronic keypads and contactless proximity systems utilising RFID cards and tokens. For modern, connected security, we offer smart products and battery-operated locks, alongside robust electric locking mechanisms and essential installation accessories to ensure a reliable and tailored security setup. View all Access Control products

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Access Control > Electric Locking > Release > Eff Eff (4)

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Category Landing Pages

Eff Eff Access Control: Electric Locking (4) Eff Eff Electric Locking: Release (4) Eff Eff Release: Eff Eff (4)