Wired Dry-Contact Module for Tedee/Gerda Locks, MPN TEDEE-DRY-CONTACT, INNE

The Wired Dry-Contact Module for Tedee/Gerda Locks provides a volt-free relay interface designed for integration with Tedee and Gerda electronic locks. Manufactured by INNE, the module allows external systems to trigger lock actions and monitor status without sharing the lock’s power circuits. It is intended for wired retrofit installations in residential and commercial access control setups where a dry contact is required to connect door controllers, alarm panels, or building automation systems.

Advantages

This wired dry-contact module isolates signal wiring from lock power, reducing the risk of electrical interference or accidental power loops. It supports straightforward integration with third-party access control devices and alarm systems and is compact enough for retrofit installations where space is limited. The volt-free relay approach preserves the original lock wiring while enabling remote triggering and basic status signalling.

Suitable for

• Integrating Tedee or Gerda electronic locks with third-party access control systems
• Connecting door sensors or alarm panels that require a dry contact
• Retrofit projects in residential buildings, offices, or small commercial properties
• Installations where electrical isolation between control and lock power is needed

When it may not be suitable

This module provides a volt-free relay interface only and does not supply power to locks or external devices. Systems that require power output, advanced encrypted communication, or full-featured lock management over a network may need a different interface or additional equipment. For installations that rely on wireless connectivity or cloud-based management as the primary method, a wired dry-contact module alone may not meet all integration requirements.

Key specifications

• Interface type: volt-free (dry) relay contact
• Compatibility: designed for physical integration with Tedee and Gerda electronic locks
• Mounting: suitable for retrofit wiring installations (compact form factor)
• Function: remote triggering and basic status signalling via dry contact
• Electrical isolation: separates signal circuits from lock power circuits

How to use

Install the module inline with the lock’s control wiring following the manufacturer’s wiring diagram and safety guidelines. Connect the external access control device, door sensor, or alarm panel to the module’s dry-contact terminals so that the external device can close or open the relay to trigger the lock. Verify wiring continuity and isolation before powering the lock system. After installation, test triggering and status signalling from the connected external system to confirm correct operation.

What to consider before purchase

• Confirm physical and electrical compatibility with your specific Tedee or Gerda lock model
• Ensure your external system accepts a volt-free (dry) contact input
• Check available space and mounting options for retrofit installation
• Plan for any additional equipment required for networked or powered integrations

Usage recommendations

For reliable operation, use short, shielded wiring for signal lines where possible and keep signal and power cables separated. Perform initial functional tests before finalizing installation and secure wiring in accordance with local electrical codes. If integration with advanced access management software is needed, consult a systems integrator to combine the dry-contact interface with the appropriate controllers or gateways.