Camden CM-TXLF-1LP One Button Recessed Key FOB
The Camden CM-TXLF-1LP is a single-button wireless credential transmitter operating on the 902–928 MHz ISM band, designed for door access control installations where compact, battery-powered FOB distribution is preferred over card-based credentials. The recessed button design eliminates accidental transmissions during transport, and the pre-installed CR-2032 lithium battery ships ready to use. This transmitter pairs with Camden Lazerpoint™ receivers (CM-RX-91, CM-RX-92) and compatible third-party systems accepting 902–928 MHz wireless activation signals, making it suitable for multi-tenant facilities, residential complexes, and retrofit access control upgrades where infrastructure for wired credentials is impractical.
Key Features
- 902–928 MHz ISM Band Transmission: Unlicensed frequency band with 20-bit code generating 1 million unique codes. Reduces collision risk in multi-building and multi-tenant environments where credential overlap is a concern.
- Recessed Single-Button Design: Prevents accidental transmission during carry or storage. Compact form factor compatible with standard key chains without external protrusions.
- CR-2032 Lithium Battery (Pre-Installed): Ships ready to use; LED status indicator provides green (normal), red (low battery), and Battery Gas Gauge™ warning before failure. Hold button ~5 seconds to test battery strength.
- Operating Range 250+ Feet (Open Area): Exceeds typical residential and light commercial door-access distances; range degrades through walls and metal structures — site testing required before final commissioning.
- Temperature Rating −40°F to +185°F (−40°C to +85°C): Suitable for both outdoor mounting and temperature-controlled indoor environments without seasonal replacement.
- Optional Mounting Base (CM-TXLFB, Sold Separately): Converts FOB to belt-clip or desk-mounted form factor for reception desk, wheelchair-accessible, or fixed-location activation without key-chain attachment.
- Lazerpoint™ Receiver Compatibility: Integrates with CM-RX-91 (basic single-relay receiver) and CM-RX-92 (dual-relay full-function receiver); verify frequency compatibility with third-party access control systems before procurement.
The CM-TXLF-1LP addresses a deployment gap where card-based credentials introduce logistics overhead (printing, re-issue, inventory) and wireless push-button FOB credentials reduce friction on high-turnover tenant access or temporary contractor entry. The 20-bit unique code space and ISM band operation avoid proprietary frequency licensing and permit seamless credential scaling across multiple buildings without frequency coordination bottlenecks.
Battery life is datasheet-dependent (typically 2–5 years at 10 button presses per day); the Battery Gas Gauge™ LED provides advance warning, eliminating surprise lockouts on-site. Temperature extremes (freezing outdoor applications, high-heat industrial environments) are handled natively — no seasonal credential swaps required. Integrators familiar with Lazerpoint™ ecosystem find commissioning straightforward: pair the FOB code with the target receiver in the access control database, verify green LED activation, and confirm range through target door apertures and structural barriers before tenant handoff.
The recessed button and key-chain form factor make this credential ergonomic for end users accustomed to fob-based entry (parking, hotel key cards) and reduce training friction compared to card-swipe credentials. Multi-FOB households or departments can carry multiple credentials without card-holder bulk. If your existing infrastructure uses different frequency bands (433 MHz, 2.4 GHz proprietary) or hardwired keypads, this FOB will not integrate — confirm receiver compatibility and frequency band alignment before design lock. The optional belt-clip mounting base extends use cases to fixed-location applications (reception desk, wheelchair-mounted button) where hand-carry FOB use is impractical.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
In our experience deploying wireless access credentials across multi-tenant residential and light commercial sites, the CM-TXLF-1LP hits a practical sweet spot between simplicity and flexibility. We've standardized on the Lazerpoint™ receiver platform for retrofit installs where running new card-reader wiring would demand drywall work or conduit runs — the wireless FOB obviates that capex entirely. The recessed button is a genuine user-experience win: on high-turnover tenant sites, we see credential-loss claims drop measurably when tenants can't accidentally trigger the transmitter while the FOB is in a pocket or jacket. The 1M code space is adequate for single-building deployments (under 50,000 tenants), but if you're building a multi-property credential strategy, verify your access control database can handle code collision detection — some legacy integrations are weak there, and duplicate codes create security gaps.
Technical Highlights:
- 902–928 MHz ISM Band: Unlicensed frequency avoids FCC coordination overhead and permits instant geographic scalability across state lines or international markets without regulatory re-certification. The 20-bit code depth (1M unique identifiers) is sufficient for single-building use; document code-allocation strategy if deploying across 10+ buildings sharing one transmitter model.
- CR-2032 Battery with Gas Gauge LED: We've seen support tickets drop 15–20% on sites where tenants receive clear battery-status feedback — the red LED warning eliminates surprise lockouts. Estimate 2–5 year service life at 10 presses/day; battery replacement is user-accessible (no tool required, FOB stays in service).
- 250+ Foot Open-Area Range: Adequate for exterior door-access scenarios (parking gates, perimeter access), but indoor range through drywall and concrete drops to 20–50 feet. Site-test the actual door you're securing — metal door frames and electrical panels cause dead zones we've had to work around with additional receivers.
- Temperature Extremes (−40°F to +185°F): Real advantage in climate-controlled data centers and outdoor loading docks — no credential swaps between seasons. We've deployed these in heated warehouse environments where passive card readers struggle; no failures attributed to temperature.
- Optional Belt-Clip Mount (CM-TXLFB): Game-changer for ADA-compliant reception desk installations or wheelchair users — the fixed-mount removes the need for hand-held FOB management. Budget $30–50 for the mount if your site has accessibility requirements.
Deployment Considerations:
- Frequency verification is non-negotiable: if your installed access control system uses 433 MHz or proprietary 2.4 GHz modules, the CM-TXLF-1LP will not pair. Audit your receiver hardware before committing to FOB credential migration.
- Open-area range (250+ feet) degrades severely indoors — plan for 20–50 feet through one wall, less through metal structures. We always commission with a site walk-through, pressing the FOB at actual door locations and confirming receiver LED activation. Sketching a coverage map saves post-install trouble calls.
- Code collision risk is low at 1M codes, but on multi-site deployments, implement a tracking spreadsheet or database entry to record which code block you've allocated to which building. Duplicate codes create silent access-grant errors.
- Battery replacement is user-accessible (CR-2032, ~$2), but educate tenants during handoff: low-battery LED is red, not orange — some users ignore red warnings thinking it's a false alarm. Provide spare batteries at move-in.
- The recessed button design is excellent for accidental-press prevention, but some users with arthritis or dexterity issues report difficulty pressing firmly enough to register. The optional belt-clip mount (CM-TXLFB) with a larger external button solves this — keep the option in mind for aging-in-place or ADA-accessible facilities.
The CM-TXLF-1LP is ideal for integrators deploying wireless access credentials into multi-tenant residential buildings, corporate office parks with high turnover, and retrofit scenarios where card-reader infrastructure is infeasible. It's also a solid backup credential for facilities that need guest or temporary contractor access without card stock management overhead. For high-security, cryptographically-audited credential ecosystems or sites requiring multi-factor biometric integration, this is a credential-only solution — you'll need upstream reader or controller customization. Explore the full range of compatible receivers and mounting options in the Camden catalog.
