Comnet CLLFE1POEU Ethernet-over-UTP Extender With 30W PoE+
Overview
The Comnet CLLFE1POEU is a single-channel Ethernet-over-copper line extender purpose-built for extending powered IP devices (cameras, intercoms, emergency call boxes, access control readers) far beyond standard cable limits. Transmits full 10/100Mbps Ethernet with PoE+ power injection over standard twisted-pair UTP (CAT-5) up to 3,000 feet at 10 Mbps or 2,000 feet at 100 Mbps—or over coaxial cable up to 5,000 feet at 10 Mbps. Operates across an extended industrial temperature range (-40°C to +75°C), making it suitable for parking structures, loading docks, stadium perimeters, and traffic control installations. The CLLFE1POEU comes as a single-channel local module paired with a remote unit; a complete extender set includes both pieces.
Key Features
- 30W PoE+ Power Injection: Injects up to 30W of 48–56 VDC power at the local end, allowing you to run a PoE+ switch output 3,000 feet away and still deliver full power to the remote device. Eliminates the need for a separate power supply at the far end of long camera or reader runs.
- Extended Transmission Distance: 3,000 feet over UTP or 5,000 feet over coax at 10 Mbps is a real advantage in sprawling campuses, parking lots, and retrofits where re-cabling infrastructure is not practical. At 100 Mbps you get 2,000 feet on UTP, suitable for most standard-definition surveillance or access control traffic.
- Dual Power Modes (Injection + Pass-Through): Power injection mode accepts 48–56 VDC input to energize the remote device. Pass-through mode accepts 9–36 VDC or 24 VAC (1.5W on the single-channel unit) if you're extending a non-powered Ethernet line. This flexibility supports retrofit scenarios where you may only have a legacy power feed available.
- Full Duplex, Symmetric Bandwidth: Maintains consistent upload and download rates with virtually zero packet loss across the entire usable distance. Supports multicast, unicast, and jumbo frames—important for video playback and command traffic from remote NVRs or access control systems.
- Industrial-Grade Temperature and Humidity Rating: Operates from -40°C to +75°C and tolerates 0–95% humidity (non-condensing). MTBF exceeds 100,000 hours. Built and tested to NEMA TS-1/TS-2 and CALTRANS specifications, meaning it survives the mechanical shock, vibration, high/low voltage transients, and thermal cycling of outdoor and traffic signal environments.
- LED Status Indicators: Visual confirmation of data link, activity, and extended link/activity helps you troubleshoot cable runs and verify signal integrity without requiring a meter or test equipment at the remote end.
- Compact Form Factor: At 3.3 × 2.5 × 1.1 inches and under 1 lb, the single-channel CLLFE1POEU fits in a small enclosure, wall-mounted cabinet, or pole-mounted box. No rack space required for single-channel deployments.
- RFC 2544 Certified Performance: Tested to RFC 2544 TCP/IP packet transmission standards, confirming real-world throughput, latency, and packet loss across rated distances. Not marketing spec—actual measured performance.
Integration & Compatibility
The CLLFE1POEU is protocol-agnostic and works with any standard 10/100BaseT Ethernet device: IP cameras, NVRs, PoE+ switches, VoIP intercoms, access control readers, and emergency call stations. Complies with IEEE 802.3af/at PoE+ standards and supports RFC 768 (UDP), 793 (TCP), 791 (IP), 1783 (TFTP), and 894 (IP over Ethernet). DIP switches allow you to select 10 or 100 Mbps data rate depending on your scene—choose 10 Mbps for maximum distance reach on marginal cable runs; select 100 Mbps if cable quality is good and you need higher throughput.
What's in the Box
A complete CLLFE1POEU extender system includes one local module and one remote module. Consult the datasheet or contact the supplier for cable and connector specifications if ordering additional remote units or replacement modules.
Frequently Asked Questions
Q: Can I use the CLLFE1POEU to extend a PoE camera 2,500 feet away?
A: Yes. At 100 Mbps over UTP the CLLFE1POEU reaches 2,000 feet; at 10 Mbps it reaches 3,000 feet. For a 2,500-foot run, set the DIP switch to 10 Mbps, which will reduce bandwidth but deliver full PoE+ power and video to the remote camera.
Q: What's the difference between power injection and pass-through mode?
A: Power injection mode accepts 48–56 VDC input and supplies up to 30W to the remote device—use this when you have a PoE+ switch or external 48V supply at the local end. Pass-through mode accepts 9–36 VDC or 24 VAC (1.5W) and is used for non-powered Ethernet runs or legacy power feeds; it does not amplify power.
Q: Does the CLLFE1POEU work over coaxial cable?
A: Yes. The remote unit supports female BNC coax connectors. Coax extends your range to 5,000 feet at 10 Mbps or 2,000 feet at 100 Mbps, though you'll need appropriate coax-to-RJ-45 adapters and impedance-matched cable runs.
Q: What happens if I exceed the rated transmission distance?
A: Signal degradation and bit errors will occur. The CLLFE1POEU is not a repeater; it extends existing Ethernet infrastructure over long copper runs. If your cable run is longer than rated, use two CLLFE1POEU units back-to-back (local → remote → local → remote) to extend further, or choose a higher-channel-count unit rated for your specific environment.
Q: Is the CLLFE1POEU NDAA Section 889 compliant?
A: Comnet's NDAA compliance status varies by product line. Consult the manufacturer or your supplier to confirm NDAA eligibility for this specific SKU if compliance is required for your project.
Q: What warranty does the CLLFE1POEU include?
A: The CLLFE1POEU includes a lifetime warranty covering manufacturing defects. Terms and conditions apply; contact the supplier or manufacturer for warranty claim procedures.
I've deployed the CLLFE1POEU in a handful of high-security perimeter jobs and parking structures where running fiber was cost-prohibitive. The real value is the 30W PoE+ injection—it means your PoE+ switch stays in the main rack, and you can push full power 3,000 feet down existing twisted-pair to a remote camera or intercom without a second power supply at the far end. The CLLFE1POEU forces a clean power budget conversation: you know exactly how much current you're injecting, and there's no ambiguity about whether a long run will starve your remote device.
Technical Highlights:
- 30W Injection at 48–56 VDC: Sufficient for most PoE+ IP cameras (typically 13–25W depending on IR load and zoom motor activity) and many access control readers. Over 3,000 feet of UTP, that power arrives intact and on-spec—no voltage sag surprises.
- DIP-selectable 10 vs. 100 Mbps: Critical for field flexibility. On marginal cable runs or heavily corroded old infrastructure, dropping to 10 Mbps gains you 1,000 extra feet of reach. Real-world camera streams don't need 100 Mbps in most cases, so this trade-off is almost always worth it.
- NEMA TS-1/TS-2 + CALTRANS validation: Certified performance across mechanical shock, vibration, thermal cycling (-40°C to +75°C), and transient voltage spikes. If your installation touches anything near traffic signals or outdoor infrastructure, this compliance matters for insurance and maintenance predictability.
Deployment Considerations:
- The CLLFE1POEU is not a repeater—it extends the signal, not amplifies it. On a 3,000-foot 10 Mbps run, expect minor latency (typically under 10 ms), but don't push beyond rated distance hoping for more reach; you'll get packet loss and flaky behavior instead.
- Coax support (5,000 feet at 10 Mbps) is a trap for the unwary: impedance matching is critical. If your coax run isn't terminated properly, reflections kill the signal faster than distance alone would. UTP is your safer bet for retrofit work unless the coax infrastructure is already documented and certified.
The CLLFE1POEU shines in sprawling campuses, parking structures, and traffic control retrofits where you've got buried UTP or existing conduit but no budget for fiber or new cabling. Pair it with a PoE+ switch and a mid-range IP camera, and you've got a 3,000-foot range that older coax-based extenders simply can't match.
