Sometimes you're working with standard AC mains. Other times, the only thing available is a 48V DC backup line in an industrial cabinet. And in both cases, you still need to deliver a stable 90W PoE output to cameras, access points, or controllers that don't tolerate voltage fluctuations.

    That's exactly the scenario the PT-PIS4PB1T-AC-M was designed for.

    It starts with the input.The switch accepts 100 to 240Vac—so it doesn't matter if you're deploying in North America, Europe, or Asia. One unit covers all those sites. No need to stock different SKUs for different regions.But here's where it gets more interesting for industrial guys: it also takes 48 to 55Vdc directly.

    Why does that matter? Because a lot of industrial sites already run on DC—battery banks, solar setups, or legacy 48V telecom gear. With this switch, you feed that DC power straight into the terminal block, and the internal circuitry boosts it to the 55Vdc needed for 802.3bt PoE output. No external converter. No extra box in the cabinet. Just one clean installation.Then there's the efficiency piece.Anyone who's managed a cabinet full of gear knows: heat is the enemy. And heat usually comes from wasted power.

    The PT-PIS4PB1T-AC-M is designed with power factor correction that hits 0.95 or better. In plain terms, that means less reactive power bouncing around the line, more of the energy you're paying for actually reaching your devices. It also means the switch runs cooler—which matters when it's sealed inside an IP40 enclosure in a warm environment.

    Coupled with ERP Level VI efficiency (that's the strict European standard for low standby power), this thing sips power when it's idle and wastes very little under load.

1. Four PoE ports, each delivering a full 90W independently—no shared budget math.

2. -40°C to 75°C operating range, so it survives where office-grade gear dies.

3. 4KV surge protection on every port, because outdoor and industrial lines aren't always clean.

4. Full web management with remote reboot, because driving four hours to reset a frozen camera gets old fast.

    If you're working on projects where power sources vary and reliability isn't optional, it's worth a look.

Website: https://www.procetpoe.com

Email: sales@procetpoe.com