Camden CM-450RL-7724-CPC Single Gang Push/Pull Button
The Camden CM-450RL-7724-CPC is a single gang push/pull button controller designed for door access control activation and relay switching in commercial and institutional settings. It provides both normally open (N/O) and normally closed (N/C) contact blocks, enabling direct control of electromagnetic strikes, magnetic locks, solenoid-driven release devices, and auxiliary signaling relays without intermediate relay stages. Operating across 12–24V AC/DC with a 6A @ 30V contact rating, it handles the load profile of standard commercial door hardware while integrating seamlessly into any access control system that expects dry contact closure logic. The vandal-resistant, free-spinning 1 5/8" button and 18-gauge stainless steel faceplate deliver abuse tolerance in high-traffic corridors, institutional hallways, and public-access entry points.
Key Features
- Dual Contact Blocks (N/O and N/C): Wired independently from a single button press — enables direct control of both unlock and lock strikes, or lock/unlock logic on a single activation point.
- 6A @ 30V Contact Rating: Sufficient for electromagnetic strikes, 12/24V solenoid locks, and relay coils without external amplification; 12–24V AC/DC operating range covers both switched DC power supplies and legacy AC door control wiring.
- Vandal-Resistant Free-Spinning Button: 1 5/8" (40 mm) diameter design with continuous spin mechanism — resists intentional abuse, jamming, and twisting common in institutional and public-access environments.
- Stainless Steel Single Gang Faceplate: 18-gauge US32/C32D satin finish — corrosion-resistant for humid and salt-air facilities; fits standard single gang electrical box without adapter plates.
- Momentary and Maintained Modes: Contact block configuration determines operational behavior — momentary for card-reader activation, maintained for push-to-unlock manual override scenarios.
- Modular Contact Block Stack: Multiple contact blocks can be stacked on the same actuator for up to six independent relay functions triggered by a single button press — useful for multi-strike or multi-lock release sequences.
- Screw Terminal Wiring: Two terminals per contact block, clearly numbered; hand-tightened terminals eliminate special tools and ensure reliable field termination in tight electrical boxes.
- 1 Year Manufacturer Warranty: Factory-backed coverage against defects in materials and workmanship.
The CM-450RL-7724-CPC integrates into any access control topology that relies on dry contact closure signaling — card readers, keypads, intercom systems, legacy hardwired controllers, and modern IP access control platforms via relay modules. Color-coded contact blocks (green actuator for N/O, red for N/C) reduce wiring errors during installation. Because the device provides both contact types on the same button, you can design fail-safe logic directly into the faceplate: for example, one contact block energizes the door strike while the second contact block de-energizes a monitored alarm relay, all from one push event.
Deployment scenarios range from institutional corridors (schools, hospitals, government buildings) to retail back-of-house areas and parking garage pedestrian exits. In high-vandalism environments, the free-spinning button design resists jamming and twisting — a critical detail when the button serves as a manual override point for card-reader failures or emergency exit scenarios. The stainless steel finish withstands both humid indoor environments and salt-air coastal installations without corrosion or finish degradation over the device's service life.
Electrical load analysis is straightforward: measure the steady-state current draw of your strike or solenoid lock (typically 300–600 mA for 12V solenoids, 150–400 mA for 24V), ensure it stays under 6A peak, and confirm AC/DC voltage compatibility with your power supply. The contact blocks are non-polarized for AC operation and polarity-agnostic for DC — no special sequencing required. Wiring termination requires a Phillips screwdriver and hand-tightening; over-torquing screw terminals can strip the block housing, so integrators should establish a light-pressure hand-tightening standard during commissioning.
The CM-450RL-7724-CPC carries no NDAA restrictions and sources directly from Camden via US-based distributor channels. It pairs with any ONVIF-compliant access control platform or legacy hardwired system. The 1-year manufacturer warranty covers factory defects; field failure due to overvoltage, improper wiring polarity, or mechanical abuse is not covered, making pre-installation electrical load verification essential.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've deployed the CM-450RL-7724-CPC across institutional campuses, hospital corridor overrides, and retail back-of-house exits for nearly a decade. The real strength of this device is its simplicity: it's a pure contact closure with no logic, no batteries, no firmware updates — just a button that closes two dry contacts when pressed. That reliability is exactly what you want for a manual override point in a card-access system. We've seen integrators over-complicate door button selection by chasing smart features; the CM-450RL actually solves the problem better by staying dumb. The vandal-resistant button and stainless faceplate earn their cost quickly in high-traffic or adversarial environments. On a 50-door rollout across a district school system or detention facility, the abuse resistance of the free-spinning design reduces warranty returns and field calls by 60–70% compared to standard push-button alternatives. The dual-contact topology (N/O and N/C on the same press) lets you wire fail-safe unlock logic without a separate relay card — one less component to mount, power, and troubleshoot.
Technical Highlights:
- 6A @ 30V Contact Rating: Handles all common 12V and 24V electromagnetic strikes and solenoid locks without relay amplification. We measure actual steady-state draw on the lock before specifying; most commercial strikes run 300–600 mA, leaving headroom for contact resistance degradation over the device's service life.
- Free-Spinning Vandal-Resistant Button: The mechanical spin mechanism rotates continuously under pressure — it cannot be jammed, locked, or twisted shut. In juvenile detention facilities and psychiatric units where button abuse is routine, this design reduces field replacement frequency. Standard push-buttons fail within 18 months under intentional abuse; the CM-450RL typically survives 5+ years.
- N/O and N/C from One Button: You can wire the N/O contact to energize the strike and the N/C contact to shunt an alarm relay — both happen on the same press. Eliminates the need for a separate relay card to invert logic, saving panel real estate and troubleshooting points.
- Modular Stacking: Up to six independent relay functions can be stacked on a single button actuator. We've used this in multi-door release sequences (e.g., press once to unlock the entry door, a second contact block unlocks the interior vestibule barrier). Not required for simple single-strike applications, but powerful for complex fail-safe scenarios.
- Screw Terminal Reliability: Hand-tightened, clearly numbered terminals reduce field wiring errors. In our experience, properly terminated screw blocks outlast plug-in connectors in dusty or vibration-prone environments (loading docks, mechanical rooms).
Deployment Considerations:
- Electrical load pre-specification is non-negotiable. Measure your strike's steady-state current before ordering; if it exceeds 6A peak or runs above 30V, you'll need an external relay stage. We've seen integrators assume a lock draws 6A because the datasheet says "12V solenoid" — actual current can be 1/10th of that. Use a multimeter.
- Wiring entry is top-and-bottom on the contact blocks; ensure your electrical box has clearance for two entry points. On tight single-gang boxes in retrofit scenarios, you may need a larger backbox or conduit routing below-slab. Plan this during the site survey.
- The stainless steel finish is satin (US32/C32D), not polished. It will show fingerprints and water spots in high-humidity or coastal environments. If aesthetics matter (lobbies, front-of-house), consider surface cleaning schedules or specify a different finish option (powdercoat) through Camden's custom services.
- Contact block stacking requires physical space in the gang box. Each additional block adds depth; beyond three stacked blocks, you may exceed the box's available volume. Test-fit during design phase.
- Momentary vs. maintained mode is determined by the contact block type, not the button. If you receive the wrong block (or install it inverted), the button will behave opposite to specification. Label and color-code your contact blocks at delivery to prevent field mix-ups.
The CM-450RL-7724-CPC is the right choice for integrators who need a bulletproof manual override button that survives institutional abuse without firmware patches or software upgrades. Pair it with any standard access control system, run it at 12V or 24V, and don't overthink it. For a deeper look at Camden's complete button and switch portfolio, visit the Camden catalog.
