Camden CM-RX-90 Advanced 1 Relay Receiver
The Camden CM-RX-90 is a single-relay wireless receiver designed to integrate Lazerpoint™ RF or Kinetic™ power-harvesting transmitters into access control and automatic door installations. Operating at 915 MHz, it penetrates building materials and avoids interference from standard garage-door frequencies more effectively than lower-frequency alternatives. The receiver decodes wireless transmitter codes and activates a Form C relay output to control door strikes, magnetic locks, push-to-exit buttons, or other 12/24V AC/DC loads. With adjustable activation modes (1–15 second delay, no delay, or latching), it adapts to various door hardware sequencing requirements and emergency egress protocols.
Key Features
- 915 MHz RF Operation: Industrial frequency band penetrates walls, metal studs, and dense materials better than 433 MHz alternatives. Reduces multipath interference in RF-congested environments.
- 40 Transmitter Code Capacity: Stores up to 40 paired transmitter IDs (Lazerpoint fobs, wall switches, or Kinetic push-plates). Supports mixed Lazerpoint and Kinetic codes in single receiver without mode switching between transmitter types.
- Form C Relay Output: NO/NC contacts rated for 12/24V AC or DC loads. Confirm strike or lock voltage prior to installation — mismatch voids relay warranty.
- Adjustable Activation Delay: Selectable 1–15 second pulse, no-delay momentary, or latching mode. Accommodates electromechanical lock ramp-up times and push-to-exit integrations without external timing modules.
- Push-and-Learn Programming: Hold transmitter button near receiver to enroll codes — no keypads or configuration tools required. Simplifies field swaps and site commissioning.
- Visual Status Indicator: On-board LED signals relay activation state and receiver power status for rapid troubleshooting during installation and maintenance.
- Compact Wall-Mount Form Factor: 2-5/8″H × 1-5/8″W × 13/16″D. Mounts via terminal block connections; adhesive velcro or screws accepted for secure placement near strike hardware or in electrical boxes.
- 12/24V AC/DC Power Supply: Works with standard access control power supplies and battery backup systems. Low current draw suitable for Class 2 wiring.
The CM-RX-90 pairs with Lazerpoint transmitter models (CM-TX-9 wall switch, CM-TX-99 plug-in unit, CM-TXLF single/dual/quad fobs) or Kinetic wireless push-plate switches (CM-45K, CM-46K, CM-7536K, CM-7509K). Lazerpoint transmitters operate on standard 9V batteries; Kinetic switches harvest power from button press kinetic energy, eliminating battery replacement cycles on emergency egress hardware.
Wireless range extends from 3 feet to 300 feet depending on building materials, RF environment, and transmitter antenna orientation. Interior office spaces and metal-stud construction typically achieve 50–100 feet; open parking areas and outdoor perimeters reach 200+ feet. Conduct site survey during design phase to confirm coverage in stairwells, mechanical rooms, or high-RF-noise zones (near Wi-Fi APs, cellular repeaters, microwave ovens). The 915 MHz frequency is FCC-certified and does not require licensing, but interference from industrial equipment or amateur radio must be ruled out during commissioning.
Installation integrates into existing access control architectures without network dependencies — relay output simply wires to strike power input, eliminating software licensing and IP camera/NVR bandwidth overhead. No ONVIF or cloud connectivity means offline operation during internet outages; suitable for facilities requiring hardened reliability (hospitals, correctional institutions, pharmaceutical manufacturing). The receiver stores codes in non-volatile memory; power loss does not erase learned transmitter IDs.
The CM-RX-90 is Manufacturer Warranty covered. Integrators deploying mixed Lazerpoint and Kinetic transmitters on the same door (e.g., staff fobs + power-harvesting push-to-exit) should verify code mixing tolerance in the datasheet — some legacy firmware versions require single-transmitter-type loading. Consult the full CM-RX-90 datasheet for register maps, RF tuning procedures, and emergency override wiring diagrams before committing to high-volume installations.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the CM-RX-90 in mixed wireless/hardwired access control ecosystems across retail, healthcare, and light industrial sites for over a decade. The key differentiator versus competing single-relay receivers is the 915 MHz RF stack and native dual-mode (Lazerpoint + Kinetic) support without hardware jumpers or firmware flashing. On projects where battery replacement cycles are a facility cost driver — think emergency egress push-to-exit buttons across a 50-door hospital — Kinetic transmitters eliminate that entirely. The CM-RX-90's ability to learn both Kinetic and Lazerpoint codes in the same 40-slot table simplifies inventory and reduces receiver part proliferation on large campuses. We've seen 300-foot open-air range materialize reliably in parking structures and outdoor garden-level entries; indoor metal-stud environments consistently hit 60–100 feet with careful antenna placement. The latching mode is operationally critical for fail-safe electromechanical strikes that require continuous coil energization — set it wrong and your door becomes a safety liability.
Technical Highlights:
- 915 MHz ISM Band Frequency: Industrial, Scientific, Medical band avoids interference from consumer 433 MHz garage-door transmitters and amateur radio. FCC Part 15 certified; no licensing required. Real-world deployment shows 2–3× better wall penetration than 433 MHz on multi-story buildings with extensive RF shielding (elevators, HVAC ducts, data centers).
- Form C Relay with NO/NC Contacts: Supports both normally-open strike activation and normally-closed monitoring loops in the same relay. Dual-circuit output means you can wire strike power and alarm circuit through one receiver — saves control module outputs on smaller systems.
- 40-Code Capacity with Mixed Transmitter Support: Load Lazerpoint fobs for staff and Kinetic push-plates for emergency egress in the same receiver without mode switching or firmware recompilation. Eases campus deployments where you don't want separate receiver for each transmitter type.
- Adjustable 1–15 Second Activation Delay: Electromechanical strikes require ramp-up time; many fail-safe locks need extended energization window before mechanical linkage disengages. This receiver native delay eliminates external pulse timers or PLC logic — spec the delay at install, set it via selector switch, done.
- Non-Volatile Code Storage: Learned transmitter IDs persist through power cycles and supply disconnections. No daily re-enrollment or cloud sync overhead — reliable for isolated or offline access control.
Deployment Considerations:
- Range Testing in RF-Dense Environments: Wi-Fi APs, cellular boosters, and industrial machinery (induction furnaces, welders, high-frequency switching power supplies) can compress effective range dramatically. Commission units with a frequency analyzer on-site; budget 2–4 hours for antenna repositioning and tuning if initial testing falls short of design range.
- Voltage Mismatch is Silent Failure: Form C relay can switch 12V or 24V, but the strike or lock must match. We've seen integrators wire 24V strike to a 12V power supply feeding the relay coil — strike never energizes, no error message. Verify supply voltage matches strike nameplate during pre-install review.
- Push-and-Learn Enrollment Requires Transmitter Access: No remote enrollment or backdoor code-insertion capability — you must physically bring fob or push-plate button to the receiver to pair. Plan site visits accordingly; don't assume user self-enrollment on day-one site turnover.
- Latching vs. Momentary Modes Are Non-Negotiable: Fail-safe strikes require latching (continuous coil power until manually reset or timeout); momentary mode will leave strike in partial-energized state and create safety hazard. Diagram your door hardware lockout sequence with the facility engineer before unit selection.
- No Remote Diagnostics Without Network Integration: This receiver is RF-only and passive. If you need to verify code enrollment or troubleshoot activation failures remotely, you'll need to pair it with a networked access control panel or add external monitoring relays. Solo unit tells you if relay fired via LED, but nothing more.
The CM-RX-90 is purpose-built for integrators working with distributed door hardware across sprawling campuses or facilities that prioritize battery-free push-button entry (Kinetic transmitters). It's not the right choice for centralized networked access control where you need real-time event logging and remote audit trails — that requires a panel-based receiver with API integration. For hardwired, off-grid, or high-reliability wireless egress applications, Camden catalog.
