Industrial 4-Port Gigabit Ethernet Switch, Mini Unmanaged Fiber Network Switch with 2X 10/100/1000Base-T and 2X 100/1000Base-X SFP Ports, Redundant 12-48 VDC Input, IP40 Aluminum Case, DIN-Rail

2 Gigabit RJ45 + Dual-Rate SFP Ports ^^ Flexible Fiber Networking Equipped with 2 auto-negotiating 10/100/1000Mbps RJ45 ports and 2 auto-detect SFP slots supporting 100Base-FX / 1000Base-X; RJ45 ports feature Auto MDI/MDI-X for plug-and-play wiring; compatible with single-mode & multi-mode SFP transceivers to extend surveillance networks over long fiber distances; supports 9K jumbo frame and 2K MAC address table for smooth 4K IP camera video transmission ^^ 12~48VDC Redundant Power Input ^^ Stable Off-Grid Operation Dual redundant 1248VDC terminal block power supply avoids network downtime if one power source fails; works seamlessly with solar batteries and vehicle DC power for remote roadside, field and solar surveillance projects; built-in multi-layer industrial EMC protection including ESD, EFT and surge shielding to resist unstable field voltage and lightning interference ^^ Link Fault Pass Through & Store-and-Forward Architecture Unique Link Fault Pass Through (LFP) function instantly alerts you to broken fiber or copper links for faster on-site troubleshooting; adopts store-and-forward switching mechanism with 1Mbit packet buffer to eliminate packet loss and reduce transmission latency; full LED indicators clearly display power, RJ45 link/activity and SFP fiber status for quick fault diagnosis ^^ IP40 Rugged Aluminum Housing ^^ Extreme Wide Temperature Tolerance Compact dustproof IP40 ribbed aluminum casing delivers excellent heat dissipation, shock and vibration resistance; reliably operates between -40C to 75C (-40F to 167F) in harsh outdoor pole boxes, factory floors and traffic control cabinets; fanless silent design with MTBF over 200, 000 hours to support 24/7 nonstop industrial monitoring ^^ Dual Mount Design & Full Industrial Certifications ^^ Wide Application Scenarios Pre-installed DIN-Rail bracket plus extra wall mount accessories for flexible installation in narrow cabinets; certified CE, FCC, RoHS and ISO9001 to meet North American industrial project standards; widely used for highway traffic IP cameras, warehouse security, factory automation, solar off-grid surveillance and remote fiber network expansion