General
Number of RJ45 ports	6
Number of fibre optic ports	2
Fibre optic connector	SC

The EDS-308-MM-SC-T from Moxa is an unmanaged Industrial Ethernet-Switch with 8 ports, specifically developed for use in demanding industrial environments. The device connects multiple network devices via Ethernet and ensures stable communication in manufacturing plants, transportation systems, or energy distribution facilities. It features fiber optic connections in SC connector format for multi-mode transmission and is designed for operation in extreme environments, including explosive areas.

Applications
This switch is designed for use in industrial facilities where high reliability and robustness are required. It is particularly suitable for applications in industrial automation, rail and transportation technology, power plants, and security systems. Certification to ATEX Zone 2 and Class I Div. 2 allows use in areas where explosion hazards exist, for example in petrochemical plants or mining.

Functions and Features in Detail
The EDS-308-MM-SC-T features 6 ports with 10/100BaseT(X) technology (RJ45 connectors) and 2 fiber optic ports in SC connector format for multi-mode transmission. The ports support Auto-Negotiation, Full- and Half-Duplex mode, as well as Auto-MDI/MDI-X, enabling flexible and compatible connections to various network devices. An integrated relay output (1 A @ 24 VDC) provides alarm signaling in case of power failure or port disconnection, enabling quick response to network disruptions.

Technology Explained Simply
The multi-mode fiber optic connections in SC format enable data transmission over short to medium distances, typically up to 2 km, depending on cable quality. The unmanaged architecture means no configuration via web interface or CLI is required—the switch functions are activated by default and require no settings. The integrated broadcast storm protection is activated via a DIP switch and prevents network overload caused by excessive broadcast packets from leading to outages. Additional protection features such as reverse polarity protection and overcurrent protection enhance operational safety.

Compatibility and Accessories
The switch is compatible with standard Ethernet devices and can be integrated into existing networks. The fiber optic connections allow connection to other fiber optic end devices or switches, enabling flexible network topologies such as ring or star configurations. Models in the EDS-308 series with fiber optic connections (SC/ST, multi- or single-mode) offer a wide range of connection options, with the EDS-308-MM-SC-T model specifically designed for multi-mode SC connections.

Mounting and Installation
The device is designed for mounting on DIN rails, enabling easy installation in enclosures. The housing is made of metal and provides an IP30 protection rating, protecting against access by foreign objects and splashing water. Mounting requires no additional tools, as DIN rail mounting is standardized.

Operational Advantages
The EDS-308-MM-SC-T is characterized by high operational reliability. The temperature resistance of -40 to 75 °C (for -T models) allows use in extreme environments, for example outdoors or in climate zones with significant temperature fluctuations. Certifications to FCC, UL, CE, ATEX Zone 2, and Class I Div. 2 ensure compliance with international safety and environmental standards. The integrated protection features and relay output enhance reliability and simplify maintenance.

Scope of Delivery
The scope of delivery includes the EDS-308 switch, a quick installation guide, and a warranty card.