Camden CM-4000/61N Additional N/C Circuit Module
Overview
The CM-4000/61N is a normally-closed (N/C) circuit expansion module designed to extend strike and lock control capacity in Camden access control deployments. This accessory adds a discrete N/C output channel, enabling multi-door configurations and parallel credential management without requiring a separate control unit. Install this module when your existing control platform has exhausted its onboard strike/lock outputs and you need to manage additional magnetic locks or electric strikes across your facility.
Compatibility
The CM-4000/61N integrates with Camden CM-3000, CM-4000, CM-5000, CM-7000, and CM-8000 series controllers. It is designed to extend the door and zone capacity of systems supporting DESFire, MIFARE, HID, SEOS, and 125kHz proximity credentials. TCP/IP communication maintains networked operation with your existing access control platform. Verify your current control unit model before ordering — this module requires a compatible host controller with expansion module slots.
Installation Notes
The module operates at 30VDC, aligning with standard access control power delivery architecture. Confirm your power supply can support the additional current draw of the new N/C circuit before installation. The module mounts into an expansion slot on the host controller — no additional cabling or network reconfiguration is required beyond standard strike wiring to the N/C terminal. If upgrading from single-door to multi-door control, pre-plan your strike and reader wiring runs to avoid retrofit costs.
