Network engineers designing for substations, roadside cabinets, and manufacturing plants have a short list of vendors who can survive those environments and keep working. AMG Systems and Comnet are both on that list.
Both brands build hardened Ethernet switches, media converters, and PoE equipment engineered to handle extreme temperatures, electrical interference, and constant vibration where standard commercial networking hardware fails. The real question for anyone specifying industrial network transmission solutions is which platform holds up longer, integrates faster, and clears procurement requirements without extra paperwork.
This AMG Systems vs Comnet comparison looks at how the two companies stack up on environmental hardening, switching architecture, PoE budgets, media conversion, and compliance, then explains where Comnet's engineering and manufacturing choices give integrators an edge on mission-critical deployments.
Note: If you're specifying network hardware for a federally funded ITS, utility, or public safety project, then Comnet's already-certified BABA lineup and Limited Lifetime Warranty save you a certification step other vendors still have ahead of them. If your camera or reader load is likely to grow, then Comnet's upgradable power supplies let you scale wattage later without swapping the switch. Talk to a Comnet specialist at comnet.net/contact-us to confirm the right models for your project.
Two Companies, Two Approaches to Data Transmission Technology
AMG Systems was founded in 1993 in the United Kingdom and has spent more than 30 years building Ethernet, fiber optic, PoE, and wireless network transmission solutions for the security, transportation, oil and gas, and manufacturing markets. Over that time AMG has gained expertise across a genuinely broad catalog: managed and unmanaged switches, media converters and extenders, wireless and 4G LTE products, and analog fiber transmission gear for legacy SDI, serial data, and contact closure signals. AMG designs and manufactures this cutting edge products range in the UK, describes itself as a leading transmission product manufacturer, and has built a significant presence across the UK, the US, and the Middle East as a supplier to security, intelligent transportation, and industrial customers.
Comnet, founded in 2008 in Danbury, Connecticut, and now operating under Acre Security, takes a narrower but deeper approach to industrial network transmission solutions. Comnet concentrates on hardened Ethernet switches, fiber optic media converters, PoE injectors, network extenders, SFP modules, and industrial power supplies built specifically for U.S. critical infrastructure, utility, and surveillance networks. Comnet does not try to be just a supplier of parts; the company positions itself as a trusted partner that helps integrators match correct products to system requirements before a project is ever installed. That focus shows up in how deep the compliance features go on each product line, covered in detail below.
Hardened Performance: Comparing Environmental Specs
Both companies design for the same punishing conditions: substations, roadside ITS cabinets, and manufacturing floors where temperature swings, high EMI, and vibration are constant. AMG Systems builds its switches and media converters to operate across a wide temperature range and has had its environmental hardening confirmed by third-party lab testing, a meaningful proof point for a company that markets itself around developing environmentally robust solutions.
Comnet's industrial switches and media converters carry an operating range of -40°C to +75°C as part of their BABA-certified specification sheet, with an industrial-hardened design built to deliver uptime in substations, outdoor surveillance runs, and ITS cabinets without compromise.
High-Density and High-Speed Switching Architecture
AMG's managed switch lines support 100 Mbps, 1 Gbps, or 10 Gbps Ethernet with port counts from 4 to 52, and offer optional 30W, 60W, or 90W PoE per port group. It is a genuinely comprehensive line of managed switches, built for everything from a small roadside cabinet to a large multi-port aggregation point, and it sits alongside AMG's separate unmanaged switches for simpler deployments that do not need managed features.
Comnet Ethernet Switches: Built for Federally Funded Deployments
Comnet's Ethernet switch lines covers the same territory, from compact managed switches to 52-port rack mount switches and includes 90W, 24V, and high-output PoE variants across the range.
The distinction for U.S. integrators is not raw port count. It is that many of these exact switch models already carry active BABA certification, which matters the moment a project is funded through the Infrastructure Investment and Jobs Act, and that every model ships with the same U.S.-based technical support team that helped design it.
Powering the Edge: PoE Budgets and Upgradable Power
Security cameras, access control readers, and outdoor sensors keep demanding more power, and both AMG and Comnet have answered with 90W IEEE 802.3bt Type 4 PoE.
Comnet's Upgradable Power Supply Advantage
Comnet gives you options on its 90W bt PoE switch: the power supply is a separate, swappable component. An integrator can size the power supply to today's camera and reader load, then upgrade to a higher-wattage supply later, delivering 90W simultaneously across all eight ports for a 720W total PoE budget, without replacing the switch itself.
On a project where camera counts grow over a five- or ten-year lifecycle, that is fewer truck rolls and less forklift-upgrade cost than a fixed, integrated power design, and it gives a facility manager a clear upgrade path instead of a full hardware replacement.
Bridging Legacy and Modern Infrastructure
Upgrading a surveillance or SCADA network without ripping out existing cabling is one of the most common asks integrators get, and both companies build for it. AMG's Coax/UTP Ethernet Extender line stretches Ethernet over existing coax or UTP runs, and its fiber optic transmission solutions handle SDI video, serial data, and contact closure signals for legacy analog systems still common on transportation and security networks.
Comnet Media Converters and Network Extenders
Comnet's media converters and network extenders solve the same copper-to-fiber and legacy-to-Ethernet transitions, including a BT PoE media converter that carries IEEE 802.3bt high-power PoE in a hardened industrial design, plus SFP media converters in single, dual, and PoE-enabled configurations.
For a network engineer standardizing on one vendor's compatibility matrix, that overlap in form factor makes migrating a legacy analog run onto a Comnet fiber backbone a much smaller lift than a full network redesign.
Scalability and Customization: SFP Modules and Enclosures
Both brands treat SFP modules as the flexible connector layer between Ethernet switches and fiber plant, letting an integrator mix single-mode and multi-mode runs on the same chassis to meet whatever the system requirements call for. AMG offers its own SFP module line alongside 19-inch racks, surge protectors, and DIN-rail mounting hardware as part of its wider accessories catalog. Comnet's SFP modules and enclosures and accessories cover the same rack-mounted and DIN-rail deployment patterns, so a design built around Comnet SFP compatibility scales from a single field cabinet to a full substation without a hardware redesign.
Federally Funded Infrastructure: NDAA, TAA, and BABA Compliance
Both AMG Systems and Comnet meet NDAA and TAA compliance requirements, so neither vendor is automatically disqualified from a defense-adjacent or federally influenced procurement on that basis alone. Where Comnet pulls ahead is Build America, Buy America Act compliance. BABA, enacted as part of the Infrastructure Investment and Jobs Act, requires that networking and communications equipment deployed in federally funded ITS, public safety, utility, and broadband projects meet domestic-content manufacturing standards before a project can be approved and funded.
Comnet already carries active BABA certification on more than 25 SKUs, spanning managed switches, high-output PoE variants, and SFP and BT PoE media converters, all designed and built in the USA. For an integrator bidding on IIJA-funded transportation, utility, or public safety work, that is a certification already completed rather than one still in progress, which shortens the procurement timeline considerably.
For a deeper breakdown of what separates a hardened switch from a commercial one, from DIN rail mounting and redundant power inputs to 10 to 30 millisecond ring recovery, see Comnet's hardened Ethernet switch buyer's guide.
Quality, Support, and Track Record
Thirty years in the industry has given AMG genuine excellence in a specific craft: purpose-engineered transmission hardware, backed by ISO 9001:2015 certified manufacturing and UK NCSC Cyber Essentials accreditation, plus Genetec-certified integration for security customers who standardize on that video management platform. That is a strong, established position in the industry.
Comnet's quality story is built around U.S.-based design, manufacturing, and support under Acre Security, an industrial-hardened design validated to -40°C to +75°C, a Limited Lifetime Warranty, and a switch and media converter lineup with active BABA certification already in place. For a procurement or compliance manager evaluating both vendors on a federally funded project, that combination of domestic manufacturing, a lifetime warranty, and completed BABA paperwork removes several open questions before the bid is even submitted.
Read what users on Reddit have to say about Comnet and AMG Systems.
Verification and Compatibility: Making Integration Seamless
Mixed-vendor networks are the norm, not the exception, on a legacy security or SCADA upgrade, and the biggest integration risk is usually an SFP or PoE mismatch discovered after installation. Comnet publishes a product compatibility tool so integrators can confirm SFP and switch pairings before they spec a job, reducing the odds of a return trip to swap hardware. Combined with U.S.-based pre-sale design assistance and post-sale technical support, that verification step is part of what keeps a Comnet-based upgrade on schedule and on budget.
Frequently Asked Questions
Is AMG Systems a company?
Yes. AMG Systems Ltd is a UK-headquartered manufacturer, founded in 1993, that designs and builds industrial Ethernet switches, media converters, PoE equipment, and wireless transmission products for security, transportation, oil and gas, and manufacturing customers.
Do AMG Systems and Comnet both support 90W PoE?
Yes. Both companies offer 90W IEEE 802.3bt Type 4 PoE.
Is Comnet BABA compliant?
Yes. Comnet holds active Build America, Buy America Act certification on more than 25 switch and media converter SKUs, all designed and manufactured in the USA, which is a requirement for equipment used on many federally funded infrastructure projects.
Can Comnet hardware replace an existing AMG installation?
In many cases, yes, particularly on media converter and SFP-based fiber runs. Confirm compatibility using Comnet's SFP compatibility tool before specifying a swap on an active installation.
Which company should I choose for a federally funded ITS or utility project?
If BABA compliance is a requirement of your funding source, Comnet's already-certified switch and media converter lineup removes that step from your procurement timeline. Talk to a Comnet specialist to confirm the right models for your project.
If your next infrastructure project depends on hardware that survives extreme environments and clears BABA, NDAA, and TAA requirements without added certification work, explore Comnet's full product range or contact the team at comnet.net.
