• 4-port RJ45 layout: 1x input port + 3 PoE output ports (ideal when you need to add a "branch" to the installation).
• PWR and Link/Act LED indicators on ports – quick diagnostics and field service.
• Extension of LAN and PoE power by another 100 m on a single UTP twisted pair (i.e., still "one cable").
• DIN mounting on a TS-35 rail with a metal clip – convenient, secure, and "rack-mounted."

In practice, you gain the most when the extender works not only as a single module, but also in a serial arrangement. Both models can operate as an extender in a single configuration and in a cascaded connection.

How does this work in the field?

• You connect the first extender (PoE IN) to the PoE switch, and then you can add another and another – up to 3 devices in series (i.e., a 3-level/three-level cascade).
• Each extender "adds" another 100 m, so you gain a maximum of +300 m in relation to the nominal range.

At each stage, apart from the next extender, there is room for an additional network branch: you can connect 2 cameras or other peripherals (e.g., an IP sensor, a small AP) – that is, exactly when you have points "along the way" that you want to power with PoE. This is convenient when you are expanding your LAN in stages and want your infrastructure to be flexible and easy to maintain.

The DIN-FE4-AT-30W is a compact Layer 2 switch that makes life easier in PoE installations thanks to proven transmission mechanisms:

• Automatic MDI/MDI-X – the ports select the pairing method themselves, so you don't have to worry about the type of cable (patch cord/crossover).
• Flow control (IEEE 802.3x) – flow control reduces losses and overloads during peak traffic.
• MAC auto-learning + 2K MAC table – automatic address learning speeds up operation and stabilizes switching in small LAN segments.

The DIN-FE4-AT-30W version supports IEEE 802.3i (10Base-T) and IEEE 802.3u (100Base-TX) wired standards and PoE+ compliant with 802.3af and 802.3at. This is an important distinction, because in installations you will also encounter passive PoE solutions – here we are talking about standard, negotiated PoE. At the same time, the device has passive cooling (no fan) and very low power consumption – approx. 1.6 W, so it is suitable for continuous operation.