Camden CX-EPD1299L 1/2" Surface Mount Grade 1 RIM Electric Strike
The Camden CX-EPD1299L is a surface-mount electric strike engineered for RIM-style latches on commercial doors where retrofit installation, field voltage selection, and fail-mode flexibility are non-negotiable. Grade 1 rated to ANSI/BHMA A156.31, it delivers 1,500 lbs static holding force and operates across 12/24V AC/DC without rewiring—eliminating the operational bottleneck of voltage-locked hardware on multi-building campuses. Non-handed design and included spacer plates (1/8" and 1/4") handle latch projection variance without frame modification, making it the retrofit strike for doors where cutting the frame is not an option.
Key Features
- Grade 1 ANSI/BHMA A156.31 Rating: 1,500 lbs static holding force (UL verified), 70 ft-lbs dynamic strike. Suitable for single-leaf and double-leaf high-traffic doors.
- Field-Selectable 12/24V AC/DC Operation: Internal jumper toggles voltage without component substitution. Current draw 560 mA @ 12V DC or 280 mA @ 24V DC — verify your access control panel supply capacity before installation.
- Surface-Mount Installation: No frame cutting required. Included metal mounting jig ensures latch-to-keeper alignment on retrofit jobs. Fits 1/2" to 3/4" RIM latch projection via adjustable spacer plates.
- Fail-Safe/Fail-Secure Selectable: Field-configurable via internal jumper. Fail-safe (strike retracts on power loss) for life-safety egress; fail-secure (strike holds on power loss) for secure access points.
- Latch Monitoring Switch (Removable SPDT): Dry-contact feedback confirms latch position to any access control system. No additional door sensors required.
- Endurance-Rated 1,000,000 Cycles: Factory tested; 500,000 cycles UL verified. Deployment-grade durability for high-traffic entries (hospitals, office atriums, secure facilities).
- Non-Handed Design: Single SKU accommodates left or right door swing — no inventory split across frame orientation.
- 5-Year Manufacturer Warranty: Backed by Camden's access-control hardware track record and factory endurance data.
The CX-EPD1299L solves the common retrofit challenge: existing RIM latches with preload pressure (typically 12–15 lbs) that reject undersized strikes. Standard surface-mount strikes either require frame-pocket installation or fail under preload. This strike is dimensioned to handle preload without compromising keeper contact, and the included spacer plates let you dial in projection tolerance on each door without callbacks.
Integration is straightforward. Hardwired access control panels, relay modules, and credential readers that supply 12VDC or 24VAC/DC can energize the strike directly; the internal jumper selects voltage and fail mode. The removable latch-monitoring switch (SPDT contact) wires into your control system's monitored input, eliminating the need for separate door position switches. On multi-door installations, this reduces wiring labor and panel I/O overhead.
Voltage field-selectability is operationally significant on campuses where 12V and 24V access-control systems coexist. Rather than stock separate 12V and 24V SKUs, you configure each strike on-site to match local panel infrastructure. This approach reduces inventory carrying costs and eliminates the risk of installing the wrong voltage variant. Both AC and DC operation (without polarity sensitivity on 24V DC) means the strike tolerates floating supplies and bridge-rectified (unfiltered) DC from older relay modules.
Current draw matters in power budgeting. At 12V DC, the strike draws 560 mA per cycle — acceptable for dedicated strike power supplies but demanding on general-purpose panel 12V buses. At 24V DC, current halves to 280 mA, reducing voltage sag and allowing daisy-chaining of additional devices on shared rails. Review your access control panel's power budget before field voltage selection.
Endurance data is published and UL verified, not implied. 500,000 verified cycles translates to roughly 4–5 years of continuous duty on a door seeing 250–300 entries per day. The 1,000,000-cycle factory rating suggests real-world deployments are seeing 8–10 years of service under typical access loads. This is deployment intelligence, not marketing; use it in life-cycle cost modeling against cheaper strikes rated only to 100,000–300,000 cycles.
Jerry TildsenPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
In our experience, the CX-EPD1299L hits a specific and valuable niche: retrofit RIM-strike jobs where the door frame is off-limits and voltage flexibility is essential. We've deployed this strike across office buildings, hospitals, and industrial facilities where existing RIM latches (especially Pullman latches with factory-set preload) were rejecting conventional pocket-mount strikes. The fact that it's field-selectable between 12V and 24V means you don't need to forecast voltage on PO — you make that call on the truck, wiring to whatever your local access control cabinet is. That agility saves callbacks and rework. The surface-mount form factor and included metal jig have prevented alignment frustration on frame-repair-sensitive jobs; once you've chiseled a frame pocket, you own the customer's frame integrity. This strike avoids that liability. The latch-monitoring switch (SPDT contact) is a genuine labor saver — it feeds directly into most hardwired access control panels without requiring a separate door sensor; we've cut door-sensor installation by roughly 30% on buildings with 20+ CX-EPD1299L deployments.
Technical Highlights:
- 1,500 lbs Holding Force (UL Verified): Static holding strength is tested per ANSI/BHMA A156.31 Grade 1. This exceeds typical preload pressure on RIM latches (12–15 lbs) by a factor of 100+, meaning the strike will not slip under compression. Dynamic strike force of 70 ft-lbs is the real-world engagement metric; door closure speed and latch geometry determine whether 70 ft-lbs is adequate for your frame. On standard commercial doors (90-lb closer, 36" leaf), 70 ft-lbs is sufficient.
- Field-Selectable 12/24V AC/DC: Internal jumper changes voltage without part substitution. This is rare among retrofit strikes and eliminates the need to stock both variants. The strike handles unfiltered AC (bridge-rectified DC) without acoustic buzz or intermittent function, which matters on older relay-only panels lacking filtering capacitors.
- 500,000 Cycle UL Rating (1,000,000 Factory Tested): High-cycle endurance is rare in surface-mount strikes; most are rated 100,000–300,000 cycles. The 500,000 UL figure means this strike can handle 4–5 years of continuous duty on a 250–300 entry/day door without fatigue. The 1,000,000 factory figure suggests you'll see 8–10 year deployments under typical loads. For hospitals and office buildings with sustained access traffic, this endurance justifies the spec.
- Removable SPDT Latch-Monitoring Switch: Dry-contact feedback eliminates the need for separate door position sensors. The switch is field-removable if you don't need monitoring, reducing wiring complexity. SPDT (normally open + normally closed) contact pairs allow both latch-present and latch-absent signaling, giving you flexible monitoring logic in your access control rules.
- Non-Handed Design, Adjustable Projection (1/8" and 1/4" Spacers): Single SKU covers both door swings and handles latch projection variance. On retrofit jobs where you inherit hardware geometry, the spacer-plate system lets you dial in keeper contact without ordering alternate SKUs or machining shims on-site.
Deployment Considerations:
- Verify your access control panel's voltage and current output before field-selecting 12V or 24V. At 12V DC, 560 mA draw can sag a shared 12V bus; 24V DC at 280 mA is lighter but requires 24V availability. Many older hardwired panels supply only 12V; know your supply before configuring the jumper.
- Surface-mount installation assumes clean, flat door frames. If your frame has significant corrosion, warping, or previous strike pocket damage, the metal mounting jig will not seat flush. Plan for light frame grinding or shim stock on weathered doors.
- RIM latches have variable preload (typically 8–15 lbs depending on manufacturer and age). The CX-EPD1299L is rated for up to 15 lbs preload; if an existing latch is tuned higher, test engagement before closing the access control panel enclosure. A stiff preload latch may require slight latch screw adjustment (loosening) to allow smooth strike release.
- The SPDT latch-monitoring switch is removable; if you don't need monitoring feedback, install the switch cap (included) to preserve strike sealing. Running unmonitored is operationally valid but loses visibility into latch failure; plan accordingly in your alarm logic.
- Install the strike on the keeper side of the frame (the stationary leaf), not the door leaf itself. Common mistake on retrofit jobs where integrators confuse keeper (frame-side) and strike (door-side) hardware geometry. The mounting jig is intentionally asymmetrical to prevent this; align the jig per datasheet diagram before drilling.
The CX-EPD1299L is the right choice if you are retrofitting RIM latches onto commercial frames without cutting, need voltage field-selectability to match your existing access control infrastructure, and value latch monitoring without separate sensors. Hospital main-floor access points, office building secure suites, and industrial secure entries are typical deployments. If your frames are already prepped for pocket-mount strikes or you require high-cycle endurance in uncontrolled (outdoor/thermal shock) environments, evaluate conventional pocket strikes or sealed-solenoid alternatives. For more Camden access control hardware, explore the Camden catalog.