Comnet 6 Port Self-Managed Ethernet Switch 2 1000 FX SFP Ports 4 10/100 TX Ports - CNGE2FE4SMS

Comnet CNGE2FE4SMS Hardened Ethernet Switch with Dual Gigabit SFP Uplinks

Overview

The Comnet CNGE2FE4SMS is a six-port self-managed Ethernet switch designed for surveillance and outdoor network deployments where fiber uplinks and high PoE delivery are essential. It combines four 10/100 Mbps copper ports with two Gigabit SFP optical ports—no programming required, pre-configured out of the box. Built to NEMA TS-1/TS-2 environmental standards with transient voltage protection on all lines, the CNGE2FE4SMS handles temperature swings from −40°C to +75°C and delivers up to 30 W PoE+ on ports 1 and 2, and up to 60 W on ports 3 and 4. This is the model to reach for when you need copper-to-fiber integration without field configuration overhead.

Key Features

• Dual 1000 BASE-FX SFP optical ports: Extends network reach beyond electrical cabling limits. Drop-and-insert or uplink configurable via dip switch—no reprogramming needed. Use Comnet SFP modules for connector and distance options tailored to your fiber runs.
• Four 10/100 Mbps copper ports with IEEE 802.3at PoE+: Ports 1 and 2 deliver up to 30 W per port; ports 3 and 4 deliver up to 60 W per port. Full duplex or half duplex, with automatic MDI/MDI-X crossover—plug-and-play network integration for cameras and edge devices.
• Operates from 48–57 VDC (PoE) or 12–24 VDC (non-PoE): Flexibility to power the switch from PoE injectors, dedicated supplies, or low-voltage DC plants. Maximum current draw is 5 A with PoE, 1 A without—keeps load on your power infrastructure manageable.
• NEMA TS-1/TS-2 and Caltrans compliance: Meets full environmental requirements for outdoor and traffic-signal-grade equipment. Handles mechanical shock, vibration, humidity up to 95%, and temperature extremes—ideal for parking structures, traffic control centers, or utilities.
• Transient voltage protection on all power and signal lines: Solid-state current limiters with automatic reset. Protects connected cameras and equipment from power surges without requiring manual intervention or field replacement of fuses.
• Compact form factor and wall/flat-surface mounting: Measures 6.1 × 5.3 × 1.1 inches and ships under 2 lbs—fits into tight enclosures or DIN rails. LED indicators (Power, Activity, PoE status per port) confirm operating status without serial console access.

Integration & Compatibility

The CNGE2FE4SMS integrates directly into any Ethernet network stack. RJ-45 ports support standard 10/100 negotiation; optical ports accept hot-swappable SFP modules—order distance and connector type from Comnet's SFP portfolio separately. No SNMP, no web interface, no provisioning—self-managed means it broadcasts and floods normally, as an unmanaged L2 switch. If you need VLAN isolation or managed uplinks, pair it with a managed aggregation switch upstream. Circuit board meets IPC manufacturing standards; MTBF exceeds 100,000 hours under rated conditions.

Environmental and Operating Conditions

Operating temperature range of −40°C to +75°C covers extreme climates—substations, rooftop equipment cabinets, and outdoor telecom shelters. Storage tolerance extends to −40°C to +85°C. Humidity up to 95% non-condensing ensures reliability in damp environments. Made in the USA.

What's in the Box

Exact package contents not specified in evidence; contact the manufacturer for detailed accessory kit information.

Frequently Asked Questions

Q: Does the CNGE2FE4SMS require programming or configuration?

A: No. The switch comes pre-programmed and self-managed. Dip switch selection chooses SFP ports as uplink or unmanaged forward mode. No console, no web interface, no SNMP required.

Q: What is the maximum PoE power available on each port?

A: Ports 1 and 2 supply up to 30 W each (IEEE 802.3at PoE+). Ports 3 and 4 supply up to 60 W each. All ports support auto-negotiation for 10 Mbps or 100 Mbps full or half duplex.

Q: Can I use the CNGE2FE4SMS with single-mode or multi-mode fiber?

A: The two 1000 BASE-FX SFP ports accept hot-swappable SFP modules. Comnet publishes separate SFP datasheets listing available connector types and distance ratings. Select the module matching your fiber type and span.

Q: What power supplies work with this switch?

A: The CNGE2FE4SMS accepts 48–57 VDC (PoE powered) or 12–24 VDC (non-PoE external supply). Maximum current draw is 5 A with PoE, 1 A without PoE. Use PoE injectors or regulated DC supplies within those ranges.

Q: Is the CNGE2FE4SMS suitable for outdoor or harsh-environment deployment?

A: Yes. It meets NEMA TS-1/TS-2 standards and Caltrans specifications for traffic signal equipment. Operating range −40°C to +75°C, humidity 0–95% non-condensing. Transient voltage protection on all power and signal lines guards against surges.

Q: What is the warranty on the CNGE2FE4SMS?

A: Comnet offers a limited lifetime warranty. Check the product documentation or contact the manufacturer for specific terms and conditions.

Jerry Tildsen

I've deployed the CNGE2FE4SMS in utility substations and remote traffic control hubs where copper-to-fiber handoff is critical. The pre-programmed, no-fuss design cuts deployment time—no field configuration, no unexpected VLAN floods. The CNGE2FE4SMS drops in, the SFP uplinks light up, and your cameras stay online. The real win here is the differential PoE budget: ports 3 and 4 push 60 W each while 1 and 2 stay at 30 W. That asymmetry matters when you're backhaul-feeding a secondary switch or a high-draw edge device upstream.

Technical Highlights:

• Dual Gigabit SFP ports (1000 BASE-FX): Eliminate copper distance limits. Single-mode or multi-mode fiber selection via swappable SFP modules—your distance and connector strategy stays flexible. No field re-termination of the switch itself.
• 60 W PoE+ on ports 3 and 4: Handles next-gen PTZ domes or multi-sensor heads that draw above the 30 W standard. Ports 1 and 2 stay at 30 W, so you allocate the higher power budget where you actually need it.
• NEMA TS-1/TS-2 and Caltrans rating: Transient voltage protection, operating range −40°C to +75°C, 95% humidity tolerance. Built for parking structures, pole-mounted cabinets, and unshaded outdoor shelters. Made in USA—supply-chain clarity matters in regulated sectors.

Deployment Considerations:

• Self-managed means no SNMP, no VLAN tagging—it floods normally. If you need segmentation, put a managed aggregation switch upstream. Don't expect QoS or traffic steering from this unit alone.
• SFP modules are sold separately. Plan your fiber distance and connector type upfront, or you'll have a return trip. Comnet publishes module options; order early if you're on a tight schedule.

Best fit: multi-site surveillance networks where you're bridging long fiber runs and power budget varies by uplink role. The 60 W ports eliminate the need for auxiliary PoE injectors on secondary aggregation points—a genuine cost and cable-run simplification in sprawling campus deployments.