Industrial 8-Port Gigabit Switch with 4 RJ45 + 4 SFP DIN-Rail IP40
Overview
The LNK-GY404G-SFP is a high-performance industrial Gigabit Ethernet switch featuring 4 RJ45
copper ports and 4 SFP fiber slots, providing maximum flexibility for mixed media networking.
Designed for harsh industrial environments, it operates reliably in a -40°C to +80°C temperature
range with IP40-rated aluminum housing.
With its redundant ring protocol, this switch ensures network recovery within 20ms, maintaining
continuous communication in critical applications such as
intelligent transportation, power automation,
and security monitoring. It supports IEEE 802.3 standards, auto MDI/MDI-X, and plug-and-play
setup—ideal for stable, maintenance-free operation in field
deployments.
Features
8 Gigabit ports: 4 × RJ45 + 4 × SFP for flexible fiber/copper deployment
Full Gigabit throughput (10/100/1000Mbps) with auto-negotiation
Redundant ring network support with recovery <20ms
Supports IEEE 802.3, 802.3u, 802.3z, 802.3x, 802.1Q VLAN, and QoS
Wide 24VDC (18–36V) power input, reverse polarity protection
Industrial-grade IP40 aluminum alloy enclosure
-40°C to +80°C operating temperature for extreme conditions
Supports DIN-Rail or wall-mount installation
EMI/EMS protection: ESD, surge, vibration, and shock resistant
Compact size, fanless design, and low power consumption
Technical Indexes
| Parameter | Specifications |
| Standard | IEEE802.3 (10BASE-T), IEEE802.3u 100BASE-TX/FX (Fast-Ethernet), IEE802.3z 1000BASE-SX/LX(Gigabit-Ethernet), IEEE802.3x (Flow
Control), IEEE802.1q, IEEE802.1p QoS, IEEE802.1d Spanning Tree |
| RJ45 port rate | 4 x RJ45 Ports: 10/100/1000BaseT(X) auto connection, Full/Half
duplex or force work mode, and support MDI/MDI-X connection |
| Fiber Ports | 4 x SFP ports (1000Base-SFP) |
| Transmission | Twisted pair: 100m (Standard CAT5/CAT5e cable) Fiber: Depending on SFP Module |
| Power Input options | Input Voltage: 24VDC(18~36V DC) Opposite connection protection |
| Environmental Limits | Operating Temperature: -40℃ to +80℃ Storage Temperature: -45℃ to +85℃ Relative Humidity: 5% to 95% (non-condensing) |
| Mechanical Dimension | Dimensions:138 x 112 x 60 mm House Protection: IP40 protection, Aluminium Alloy Installation: DIN-Rail or wall mounting Weight: 640g |
| Approvals | EMI: FCC Part 15 Subpart B Class A,EN 55022 Class A EMS: • EN61000-4-2 (ESD),Level 3 • EN61000-4-3 (RS),Level 3 • EN61000-4-4 (EFT),Level 3 • EN61000-4-5 (Surge),Level 3 • EN61000-4-6 (CS),Level 3 • EN61000-4-8,Level 3 Shock: IEC 60068-2-27 Free Fall: IEC 60068-2-32 Vibration: IEC 60068-2-6 |
