Antaira LNX-1204G-SFP 12-Port Gigabit Unmanaged Industrial Network Switches with 4x SFP and Extended Temperature Options

Some cabinets act as a fiber hub, gathering links from several remote enclosures while still serving a handful of local devices. The Antaira LNX-1204G-SFP series is designed for that role: industrial gigabit unmanaged Ethernet switches with four SFP slots for fiber and eight copper ports, which Antaira describes as ideal for high bandwidth and long-distance links in harsh or outdoor environments. There is no management interface and nothing to configure, so the switch forwards traffic as soon as it is powered, and each fiber link can be sized to its own run.

Every LNX-1204G-SFP shares the same design. The eight 10/100/1000Base-T RJ45 ports support auto negotiation and auto MDI/MDI-X, and the four dual-rate SFP slots take 100 or 1000 Mbps transceivers, so each fiber link can use the mode and reach it needs. Switching is unmanaged and store-and-forward on a 24 Gbps fabric with an 8K MAC table, a 4 Mbit buffer, 9.6 KB jumbo frames and IEEE 802.3x flow control. Power arrives on 12 to 48 V DC redundant inputs with a 10 W draw, high EFT and ESD protection guard against unregulated voltage, and a relay output rated 24 V DC, 1 A signals a power failure.

The series has two builds. The LNX-1204G-SFP is the standard temperature model, rated -10 °C to 70 °C for heated or indoor cabinets. The LNX-1204G-SFP-T is the extended temperature model, rated -40 °C to 75 °C for unheated and outdoor enclosures. Both share ports, power input and approvals. Where two of the uplinks need 10G, the LNX-1204G-10G-SFP pairs two SFP slots with two 10G SFP+ slots.

Both LNX-1204G-SFP models come in an IP30 metal case for DIN-rail or wall mounting, and follow IEC 60068-2-27 shock and IEC 60068-2-6 vibration testing. Antaira lists UL 61010-1 certification, with FCC and CE marks and RoHS compliance, and covers the series with its 5-year warranty. Antaira names power and utility, water and wastewater treatment, oil, gas and mining, process control automation, security access control and intelligent transportation systems as typical applications for the LNX-1204G-SFP series. In practice, four SFP slots let one cabinet act as a small fiber star, with multi-mode links to nearby enclosures and single-mode links to distant ones, depending on the transceivers fitted.