GUIDE6 min readUpdated Jun 2026

Revolution Pi (RevPi) review

KUNBUS's RevPi is the most established industrial Pi line — EN 61131-2 certified, DIN-rail, with modular I/O expansion. Where it fits, and where it costs more than it needs to.

SHORT ANSWER

Revolution Pi is a mature, EN 61131-2-certified industrial Pi from KUNBUS, built around the Compute Module in a DIN-rail enclosure with modular I/O expansion (DIO, AIO, MIO) and a PREEMPT_RT-patched OS. It's a safe, well-supported choice — and priced accordingly, typically around $489 for a Connect-class unit, roughly double a comparable own-build board.

−40→+55 °C
RevPi operating range
KUNBUS
EN 61131-2
certified to the PLC standard
KUNBUS
$489
typical Connect 5 street price
Q2 2026

01What you get

A Compute-Module-based controller in a rugged DIN-rail housing, a real-time-patched Linux, modular I/O modules you click onto the rail, and KUNBUS's long-term support and certification. For a team that wants an industrial Pi with a vendor behind it, RevPi is the default answer.

02Where it costs more

RevPi's price reflects distributor margin on a branded, certified product. When the certification matters, it's worth it. When you just need the same CM5-class capability, an own-build board (like our Node One at roughly half the price) delivers it without the markup.

Common questions

The ones we're asked on every first call.

Not in the safety-certified sense, but it meets the EN 61131-2 environmental standard and runs soft-PLC stacks like CODESYS. For deterministic, SIL-rated control you'd still pair it with certified gear or an MCU co-processor.

Yes, via add-ons, though it's not its focus. If edge AI is the point, a Seeed EdgeBox with a Hailo accelerator or our Node One (Hailo-8 ready) is a more direct fit.

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