Camden Full Function Dual Relay Receiver - CM-RX-92

We've deployed the CM-RX-92 across retail, corporate, and education facilities where multi-door entry points require centralized access management without the wiring and panel complexity of single-relay-per-door architectures. The dual-relay design is genuinely valuable — in a typical 8-door entry vestibule (e.g., main lobby with dual leaves), you can consolidate two strike lock relay drivers into one networked node, cutting cable runs by half and reducing enclosure real estate. The TCP/IP command interface slots cleanly into modern IP access control platforms (Genetec, Salto, Openpath), while RS-232 fallback keeps integrations with older centrals (Honeywell, Lenel Classic) straightforward. What differentiates the CM-RX-92 from cheaper dual-relay modules is the plug-in daughterboard architecture — if a customer's RF infrastructure changes or you're absorbing a legacy building, you can retrofit frequency support without hardware replacement. The HID credential reader compatibility is also a practical win; we've installed this alongside HID iClass and Prox readers without needing translation layers.

Technical Highlights:

• Dual 30VDC Relay Outputs: Each channel independently rated for 0.5–1.5A solenoid draw — typical strike locks and magnetic holders operate at the lower end, leaving headroom for heavier industrial solenoids. Simultaneous energization requires supply capacity confirmation, but the device itself does not impose artificial switching delays between channels.
• TCP/IP and RS-232 Dual-Protocol Support: Networked deployments use TCP/IP with standard access control command sets; legacy or redundancy-critical sites use RS-232 wired serial, which is immune to network congestion and RF interference. You can run both simultaneously if your platform supports dual command paths.
• HID Card Compatibility (Pass-Through): The receiver itself doesn't read credentials — it receives commands from networked readers or a central controller. This design is modular: credential validation happens upstream, relay commands come downstream. Integrates naturally with mixed HID environments (iClass, Prox, newer smart-card readers).
• Modular RF Daughterboard Slots: Up to two daughterboards can be installed simultaneously, supporting up to three total RF frequencies in one physical node. Valuable for migrations (Wiegand → IP transition) or multi-tenant buildings with different RF standards per zone. Daughterboards are field-swappable without removing the main unit.
• Visual Status Feedback: On-board LEDs indicate power state, network connectivity (for TCP/IP), and per-relay energization. Reduces commissioning time — field technicians can verify command receipt without connecting to a central management console.
• 2-Pin Header Connector, Standard Gauge Wire: 18–22 AWG conductors for strike lock wiring are industry standard; no special connectors, no proprietary adapters. Reduces parts inventory and accelerates field repairs.

Deployment Considerations:

• The 30VDC supply powering both relays must be dimensioned for simultaneous worst-case draw — typically 3A peak for two strike locks. Confirm supply capacity in your enclosure spec; undersized supplies will cause nuisance dropouts during high-traffic periods or if solenoids are aged and draw above spec. If your panel is tight on 30VDC capacity, consider staggering relay command timing (sequential unlock vs. simultaneous) in your access control platform logic.
• RS-232 command routing requires explicit serial port configuration on the access control controller; TCP/IP is more straightforward for modern platforms but requires network reliability assurance. For critical doors (emergency exits, data center access), consider wired Ethernet with redundant switching or dual TCP/IP command paths.
• RF daughterboards are optional — the unit ships as a TCP/IP and RS-232 only receiver. If you need wireless command capability, budget for daughterboard cost and verify frequency availability in your region before purchase. Daughterboards are NOT quick-ship items; order early if planning RF expansion.
• HID reader integration assumes your credential readers output network-addressable events (ONVIF metadata, access control platform API, or serial Wiegand translation). The CM-RX-92 itself does not process Wiegand raw — you need a controller or gateway upstream that validates the card and sends the relay command.
• Mounting inside an enclosure near strike lock wiring reduces cable runs, but verify thermal conditions. The relay outputs dissipate minimal heat, but ensure the enclosure itself is not subject to extreme temperature swings. For outdoor or semi-outdoor panels, use a weatherproof sub-enclosure.

The CM-RX-92 is the right choice for integrators and system architects consolidating multi-door access control into fewer managed relay nodes, particularly in card-based HID environments where TCP/IP or RS-232 command routing is already in place. It's not ideal for single-door installations (overkill and cost-inefficient) or for sites with no networked access control infrastructure (you'd need to add a controller). For a 4–8 door entry cluster, the hardware and wiring savings versus per-door single-relay modules typically recover cost within 12–18 months of labor reduction. Explore the full Camden catalog to compare strike driver options and RF daughterboard availability.