A new device is on the trunk. The BMS says “offline”. Is it the wiring, the settings, or the device? This guide shows you how to test Modbus RS485 communication in seven clear steps, from the cable to a logged result. You need a laptop, a USB to RS-485 adapter and a Modbus RTU tester.…
Modbus Poll has been the go-to Modbus master for many engineers for years. It works. But it is not always the right tool for the job in front of you. If you are searching for a Modbus Poll alternative, you probably hit one of three walls: the licence, the install, or the operating system. This…
You are on site. The device is wired, the BMS is waiting, and one register refuses to show up. What you need right now is a Modbus tester: a small tool that talks to the device and shows you exactly what comes back. This guide explains what a Modbus tester does, what to look for,…
A Modbus relay module looks like the most boring device in the panel: a few relays, two RS485 wires, a slot on the DIN rail. But in HVAC and building automation it’s the point where your nicely abstracted Modbus logic meets 230 V fan motors, valve actuators and curtain drives. Pick the wrong one and…
Walk into any modern office, hotel room or hospital ward and you will find a small device on the wall that people barely notice. That is usually a compliment. When room control works, nobody talks about it. When it doesn’t, everybody does. Alledio makes two devices that live in exactly that spot: the OEM Room…
In real HVAC and building automation projects, the first thing that tends to run out is not CPU power or network bandwidth, but relay outputs at exactly the points where you need to switch loads. A 5 Stage Relay Control solves that bottleneck by adding five intelligent, addressable relays on RS485 in a compact DIN‑rail housing.…
In many real HVAC and building automation projects, the limiting factor is not software or network capacity, but something much more basic: you simply run out of relay outputs where you need them most. The room-level version of this, including turning a 0–10 V fan signal into stepped relays, is in 5-stage relay control. A…
ESG building requirements are set to fundamentally transform the real estate sector in the coming years. Increasing regulatory pressure clearly shows that buildings are not exempt from ambitious sustainability targets at both national and EU levels. In both new construction and building operations, compliance with ESG criteria is becoming a key driver of economic success. It…
A Room controller for rooftop units (RTUs) is more than a wall device with a few settings on a screen. It is the part of the system people actually see, touch, and judge, so it ends up carrying the reputation of the whole HVAC solution in a surprisingly visible way. The Alledio OEM Room Controller…
If Alexa was built today, she’d probably be out of a job tomorrow. Because the future isn’t a single assistant with one brain. It’s a network of smart AI voice assistant devices on your walls, each one fluent in ChatGPT, Gemini, Grok and Perplexity – and that’s exactly what we’re building at Andivi Labs. We’re…