Lantronix SISTP1040-551-LRT 5-port hardened PoE++ network switch

Hardened PoE++ switch for outdoor networks

The Lantronix SISTP1040-551-LRT is an unmanaged five-port Gigabit Ethernet switch built for harsh environments. Four ports deliver up to 90 W each under IEEE 802.3bt, with a fifth copper port plus a dual-speed SFP slot for fibre uplinks. Redundant power inputs and a -40 °C to +75 °C operating range keep cameras, lighting and signage running in extreme conditions.

Installers needing high power in tough climates

This unit suits integrators deploying PoE lighting, high-power IP cameras or digital signage where temperatures swing wide and uptime matters. The DIP-switch PoH mode adds 95 W capability for HDBaseT devices. It is not for offices needing managed features such as VLANs, QoS or remote monitoring, nor for sites that require fanless silence in climate-controlled racks.

90 W per port under IEEE 802.3bt

Each of the four PoE++ ports can supply 90 W simultaneously, making the per-port power budget the deciding spec. If connected devices draw less, a standard 802.3at switch may suffice; if they need more, this model cannot exceed the 90 W limit.