Winsonic NE11004-20834A 8-Port Gigabit + 4 SFP Ring Managed Industrial Switch

A Gigabit ring switch with four SFP fibre slots

The NE11004-20834A is a managed ring-network industrial switch with eight adaptive 10/100/1000 Mbps RJ45 ports and four 1000 Mbps SFP slots. Winsonic describes the ring function as allowing hand-in-hand switching: if a link breaks at any point the data forwarding in the network is unaffected. The ordering line reads 8-Port Gigabit + 4G SFP Industrial Fast Ring Managed Switch.

With four SFP cages you can build a fibre ring between buildings while serving local devices on copper. The enclosure is fanless, uses a high-energy aluminium roof groove for heat conduction and carries lightning and static protection, as noted in the overview.

Because the four SFP slots take Gigabit modules, the same hardware can be used with short-range multimode fibre inside a plant or with long-range single-mode fibre between sites; the module choice sets the distance, not the switch. Eight copper ports keep local cabling simple and all support auto MDI/MDIX, so straight and crossover patch cords both work.

Technical specifications

Ring, VLAN and security functions

The management firmware printed in the datasheet covers resilience and access control. Key groups:

Typical deployment and selection notes

This is the right Winsonic model when the requirement is a ring of Gigabit nodes without PoE: transport signalling cabinets, substation communication rooms, oil and gas pad networks and port or customs facilities all appear in the intended application list of the datasheet. For PoE endpoints choose NE11003-20844B, and for a smaller ring node with two SFP slots choose NE11006-20432A.

Remember the one-click ring and storm-suppression buttons are hardware-assisted features described in the overview; configure the ring master and slave roles before closing the loop. The 12 to 55 V DC input suits 24 V and 48 V industrial supplies. Sibling reference: NE11001-30844A.

For ring commissioning, first connect all nodes without closing the loop, configure the ring protocol on the two ring ports of every unit, then close the loop. The datasheet states that the ring function maintains forwarding if a link is disconnected at any point. Aggregation by LACP can double the capacity between two switches without creating a loop, and the load-balance method can be set by source MAC, destination MAC, source IP or destination IP.

Management options include console, Telnet, SSH, web and SNMP v1, v2c and v3 with traps, plus file transfer by TFTP. The supply of 12 to 55 V DC avoids the need for a special PoE supply and suits common 24 V cabinet rails. The enclosure is 145 x 109 x 62 mm, fanless, and rated for -40 to 75 degrees C, so there are no moving parts to clog with dust, which is relevant in desert-edge installations. Humidity must remain non-condensing.

Documents and quotation

The NE11004-20834A manufacturer datasheet is attached to the page. Seven Star LLC supplies Winsonic switches from Muscat; share the model code, quantity and the SFP transceiver types required. Browse more in Industrial Communications.

Related Winsonic products on this site include the SFP transceiver range for the four SFP slots, and the unmanaged and PoE switches for neighbouring cabinets. When enquiring, state the fibre type, wavelength and distance so a matching module can be proposed, and tell us the ring size so firmware options can be checked with the manufacturer.

Delivery format, packaging and lead time are confirmed in the written quotation. Supply with the NE11004-20834A the exact number of ring nodes, so the SFP module count can be checked against the four slots on each unit and spare modules can be planned for maintenance.