Camden CM-1060 Surface Mount Key Switch 2 SPDT Maintained
The Camden CM-1060 is a surface mount key switch designed for 30VDC electric lock and strike control in commercial access control systems. The dual SPDT (Single Pole Double Throw) maintained contacts hold their position until the key is manually turned again — eliminating the need for continuous operator intervention or relay logic to sustain lock state. This is the standard control interface for manual override or supervised door strike activation on access-controlled entry points.
Key Features
- 2 SPDT Maintained Contacts: Each contact switches independently between two positions. Maintained configuration means the switch holds state without power cycling — critical for electric strike control where lock position must persist.
- 30VDC Rated: Designed for standard low-voltage access control architectures. Works with 24VDC or 30VDC power supplies commonly found in door control and lock power infrastructure.
- Mortise Cylinder Interface: Accepts standard 1" to 1¼" mortise key cylinders without drilling, set screws, or custom adapters. Direct drop-in compatibility with off-the-shelf cylinders.
- Surface Mount Aluminum Construction: 1/4" die-cast aluminum housing with heavy-duty rubber gasket. Cylinder locators prevent rotation. Mounts directly to standard electrical junction boxes — no recessed mounting cavity required.
- Soldered 18 AWG Leads with Heat-Shrink: Color-coded wiring terminates with solder lugs and heat-shrink protective sleeves. Reduces field termination errors and improves reliability in wet or outdoor environments.
- Tamper-Proof Hardware: Includes tamper-resistant screws and driver. Brushed aluminum finish resists corrosion on interior and covered exterior installations.
The CM-1060 integrates directly into HID-compatible access control systems and 30VDC door control power distributions. Surface mount form factor supports both new construction (wired during rough-in) and retrofit applications where a recessed mortise lock cannot be installed. The maintained contact design eliminates the operational complexity of momentary switches in strike control — once turned, the lock remains energized or de-energized until the next manual key turn.
Typical deployments include emergency override stations at secured doors, manual backup control for access control system failures, and supervised unlock interfaces where facility staff need direct, non-networked key control. The dual SPDT configuration allows one cylinder to control two separate circuits — for example, electric strike and auxiliary relay, or primary and backup strike on a double-door pair.
Installation is straightforward: mount to a standard 2-gang or single-gang junction box, insert the mortise cylinder (no fasteners), and solder or crimp the 18 AWG leads to the lock power supply and strike control circuit. Weather-resistant gasket sealing and brushed aluminum construction provide durability in lobby, loading dock, or controlled-environment applications. Manufacturer Warranty covers manufacturing defects; full datasheet available for electrical circuit integration and cylinder compatibility verification.
Eden PhillipsPerspective based on aggregated and affiliated engineering team experience.
We've specified the Camden CM-1060 on dozens of access control retrofits where a manual key override or emergency unlock interface was required. The maintained contact design is the critical differentiator here — it's not just a switch, it's a state-holding control that works without active voltage or relay logic running behind it. On a multi-door access system, the CM-1060 becomes your dead-simple mechanical fallback when the controller fails, the network goes down, or facility staff need to unlock a space manually without waiting for a security officer with a wireless fob. The surface mount form factor also eliminates the friction of retrofitting into doors that don't have a standard mortise lock cavity — you're drilling or cutting a small hole for a junction box, not remaking the entire door preparation. We've seen integrators pair this with a SPDT maintained relay and a separate 12V or 24V auxiliary power supply to create a two-position lock state (energized unlock / de-energized lock) that persists across power cycles. The soldered leads and heat-shrink are a nice touch — it reduces loose connections in wet environments like loading docks or outdoor covered areas where people are rougher on equipment. One caveat: the 30VDC spec is a hard ceiling. If your strike or solenoid lock is rated for 24VDC only, the CM-1060 works fine at 24VDC, but don't try to push higher voltage through the contacts — you'll degrade the switch over time.
Technical Highlights:
- SPDT Maintained Contact Topology: Two independent switch circuits, each with maintained state (no relay refresh needed). Ideal for dual-strike doors or where one cylinder controls both a primary strike and an auxiliary solenoid. Contact rating: suitable for low-voltage DC circuits in the 18-30VDC range.
- Mortise Cylinder Compatibility: Standard 1" to 1¼" cylinders drop in without modifications. No set screws, no adapters — the cylinder locators in the die-cast housing prevent rotation. Means you can source replacement cylinders from any access control or locksmith supply catalog.
- Surface Mount Gateway: Mounts to a standard 2-gang electrical box or retrofit enclosure. Gasket sealing handles light spray and humidity. No recessed cavity required — integrates into existing wall infrastructure without door modification.
- Soldered Termination: 18 AWG color-coded leads with heat-shrink. Reduces field termination errors and improves reliability in damp or outdoor environments versus crimp-only terminals.
- Die-Cast Aluminum Housing: 1/4" aluminum construction is corrosion-resistant and tamper-resistant (fasteners are security-grade). Lightweight but rigid enough to handle high-frequency key cycling in busy entry points.
Deployment Considerations:
- Maintained contact means the switch holds its position — don't assume it returns to a neutral state. Wire control logic accordingly: if your strike is energized when the switch is in Position A, it will remain energized until the key is manually turned to Position B. Plan your power distribution and relay logic to match this behavior.
- 30VDC is the maximum rating. If your facility power supply is 48VDC (sometimes seen in outdoor lighting or long-run control circuits), you'll need a step-down regulator. Overvoltage degrades the switch contacts.
- Cylinder keying: The CM-1060 accepts a mortise cylinder, but the actual key profile and master key compatibility depend entirely on the cylinder you source. Standard practice is to order cylinders pre-keyed to your facility's master key suite. Confirm cylinder keying strategy with the locksmith or security integrator before installation.
- Environmental exposure: The gasket and brushed aluminum handle covered outdoor areas (overhangs, lobby porticos) but not full sun-and-rain exposure. For truly harsh exterior use (direct rain, salt spray), consider recessing the switch into a NEMA 3R or 4X enclosure.
- Emergency override workflows: Document the CM-1060's location and key control procedure in your facility's emergency response plan. If it's your fallback unlock method during a power outage, security staff must know where it is and how to use it.
The CM-1060 is the right choice if you need a manual, mechanical key-based override for door strikes in commercial access control systems, especially in retrofit environments where door modification is expensive or impossible. It's not a replacement for a full keypad or wireless reader — it's the dead-simple fallback when electronic systems fail. Integrators and security teams managing multi-door buildings with aging infrastructure or high availability requirements should evaluate this against networked unlock systems. See the Camden catalog for complete door control and override options.
