Camden CM-4000/54N N/O & N/C Switch Block Contact
Overview
The CM-4000/54N is a normally open (N/O) and normally closed (N/C) switch block contact module rated at 30VDC. This accessory adds relay contact capability to Camden access control systems, enabling control of electric strikes, magnetic locks, and auxiliary devices. Install it when you need dual-state output—one contact energized, one de-energized—without building custom wiring harnesses into your main controller.
Compatibility
The CM-4000/54N integrates with Camden CM-4000 through CM-8000 series controllers. If your system uses DESFire, MIFARE, HID, SEOS, or 125kHz proximity credentials via compatible smart card readers, this module handles the relay switching. Verify your specific controller model supports switch block expansion before ordering—not all series offer the same modular contact interface.
Installation Notes
This unit operates at 30VDC and must be wired to a compatible controller port. No power supply is required beyond what your main controller already provides. Ensure your power budget accounts for any connected strikes or locks—30VDC relay contacts are current-limited, so high-draw devices (heavy solenoid strikes) may require a separate power amplifier or UPS-backed supply. Label all wiring pairs clearly to avoid N/O and N/C confusion during commissioning.
