Electric Door Strike Commax EL1-004 by BIRATRONIK — basic model with memory and AC switch

The Commax EL1-004 by BIRATRONIK is a basic electric door strike designed for door entry and access control installations. It provides a remote release mechanism and a memory function that retains the last state, together with an AC switch suitable for systems that use alternating current power. The unit is intended for straightforward integration into residential and light commercial intercom or access systems where a reliable, compact electric strike is required.

Advantages

The electric door strike features a memory function that preserves the strike position after activation, which can simplify control logic and reduce unnecessary power cycling. The integrated AC switch allows compatibility with alternating current door release circuits, avoiding additional relays in some installations. Its basic construction emphasizes ease of installation and practical operation for standard door frames and access panels.

Suitable for

• Residential entry systems with intercoms
• Small offices and light commercial access control
• Replacement of standard mechanical strikes where AC switching is present
• Installations requiring a simple remote release with state memory

When it may not be suitable

This basic model does not include high-security features such as heavy-duty tamper resistance or advanced monitoring; it is intended for standard security needs rather than armored or high-risk doors. If the installation requires fail-secure/fail-safe changeover options, integrated sensors for bolt status, or compatibility with specific high-voltage or nonstandard control systems, this unit may not meet those requirements.

Key specifications

• Type: electric door strike with memory function
• Switch type: AC switching for alternating current release circuits
• Application: door entry and access control for residential and light commercial use
• Operation: remote release with mechanical latching compatible with standard door frames

How to use

Mount the strike in the door frame aligned with the latch of the door lock according to standard installation dimensions for electric strikes. Connect the AC switch terminals to the building’s alternating current release circuit or to the intercom/access controller outputs designed to handle AC switching. Use the memory feature to retain the last release state where required by the access logic; consult the wiring diagram provided by the manufacturer to ensure correct connections and polarity where applicable. After installation, test remote release and verify that the strike returns to the locked state as expected and that the memory function reflects the last activation.

What to consider before purchase

• Verify that your access control system provides or supports AC switching for the strike
• Ensure the mechanical dimensions and latch alignment match your door frame and lock
• Confirm that a basic model without advanced monitoring meets your security requirements
• Check power ratings and installation instructions for compliance with local electrical standards

Usage recommendations

For reliable performance, use the Commax EL1-004 with compatible intercom or access controllers rated for AC switch outputs, perform routine functional tests after installation, and follow the manufacturer’s mounting and wiring instructions to ensure correct alignment and safe electrical connections.