Camden CX-EMF-2ABM Multi-Function Relay Reader

Overview

The Camden CX-EMF-2ABM is a multi-function relay module designed for access control integration in professional security deployments. This unit combines reader functionality with relay control in a durable metal cabinet enclosure, offering TCP/IP-based communication for seamless network integration. The CX-EMF-2ABM supports keypad credential input and magnetic lock strike control, making it suitable for single and multi-door access control architectures where credential verification and electromagnetic locking must be coordinated.

With two control switches integrated into the design, the CX-EMF-2ABM provides flexible logic control for access decisions. The unit operates at 20VDC, delivering reliable power management for keypad readers and magnetic lock strikes across standard security installations. TCP/IP communication eliminates the need for dedicated serial or parallel wiring runs, simplifying network topology and reducing installation labor in retrofit and new-build environments.

Key Features

Multi-Function Relay Design: Combines reader interface with relay switching logic in a single enclosure

Keypad Reader Input: Supports numeric keypad credential entry for PIN-based access control

Magnetic Lock Strike Control: Direct integration with electromagnetic locking hardware for door retention

Two Control Switches: Dual switching capability for independent access control logic or secondary door management

TCP/IP Communication: Network-based protocol enables centralized access management and reduces field wiring complexity

20VDC Operating Voltage: Efficient power delivery for reader and lock actuation in compact form factor

Metal Cabinet Enclosure: Robust housing designed for wall-mount installation in secured and unsecured environments

Professional-Grade Construction: Built for integrator deployment in commercial security, healthcare, and enterprise access control systems

Integration & Compatibility

The CX-EMF-2ABM integrates into access control systems that utilize TCP/IP as the primary communication backbone. The keypad reader input accepts standard numeric PIN credentials, compatible with credential databases managed by access control servers. The magnetic lock strike output supports 12VDC and 24VDC electromagnetic locks commonly deployed in commercial door hardware. Two control switches enable logic-level coordination with alarm panels, door position sensors, and secondary access points within a single network architecture.

The metal cabinet design accommodates both surface-mount and recessed installation, providing flexibility for retrofit applications where modular hardware integration is required. Network integration via TCP/IP eliminates analog wiring runs, reducing EMI vulnerability and simplifying troubleshooting during commissioning.

Typical Applications

Security integrators deploy the CX-EMF-2ABM in multi-tenant office buildings, laboratory access control, secure server room entry, and healthcare facility access points where keypad entry and electromagnetic locking must operate in synchronized control logic. The dual-switch configuration supports two-door installations or single-door deployments with secondary sensor logic (e.g., door position monitoring or tamper detection integration).

Ted Perry

Perspective based on aggregated and affiliated engineering team experience.

I've specified the Camden CX-EMF-2ABM in several multi-site installations where centralized access control was required without the cost of dedicated serial infrastructure. The dual-switch design has proven valuable in deployments where we needed independent logic for two separate access points or where door position sensors required secondary switching capability. TCP/IP communication simplified network topology and eliminated analog wiring runs that typically complicate retrofit projects.

Technical Highlights:

Keypad Reader Input: PIN-based credential entry integrates cleanly with standard access control databases and supports rapid provisioning of user codes without hardware changes
Magnetic Lock Strike Control: Direct relay output to electromagnetic locks eliminates intermediate relay modules and reduces point-of-failure complexity in the locking circuit
Dual Control Switches: Two independent switching outputs allow coordination of access logic across multiple doors or integration of secondary sensors without external relay logic modules

Deployment Considerations:

Verify 20VDC power supply capacity during design phase; magnetic lock actuation draws significant current, particularly if multiple units operate simultaneously
Confirm TCP/IP network availability at installation location; lack of hardwired network access complicates retrofit scenarios in legacy buildings
Plan credential database synchronization early if integrating with existing access control servers; keypad credential management must align with system-wide user provisioning workflows

The CX-EMF-2ABM performs well in environments where integrators need compact, network-enabled relay control without the footprint or cost of distributed relay modules. Dual switching and keypad support make it a practical choice for small-to-medium multi-door installations where credential complexity remains minimal.