What Is LOGO!? The Box in the Panel That Follows Rules
LOGO! is a small box in your electrical panel that follows the rules you give it — like 'if it's dark outside and it's before 11pm, turn on the yard light.' It's not a smart bulb and not a full smart home — it's a quiet helper that keeps working even when nobody's thinking about it.
How it works, in plain words
Picture a rule
It starts with a simple idea — 'if it's dark and not too late, turn the light on' or 'if the tank is empty, start the pump.'
A box in the panel
LOGO! is a small module that sits on a rail inside the panel, alongside other devices — you never see it day to day.
The rule goes inside
An electrician writes the rule into LOGO! using simple function blocks, and tests it in a simulation before switching it on.
It runs itself every day
Once connected, the box follows the rules on its own — no app, no subscription, no need for an internet connection.
Why it's not a smart bulb and not a big smart home
places a family notices it
Yard, pump and watering — places where one small box coordinates several devices instead of a handful of separate timers.
Different from a smart bulb
A bulb only knows about itself. LOGO! coordinates several devices together — a light, a sensor, a switch — under one shared rule.
Smaller than a full smart home
LOGO! is right for individual tasks. If a house has many points to cover, a KNX system is the better fit.
Useful in the yard, at the pump, for watering
Typical tasks: lighting by time or sensors, pump control, watering, ventilation, gates, heating logic.
Room to grow
The base module has its own inputs and outputs, and extra modules can be added — including analogue signals like temperature.
Visible on the network too
The newest LOGO! 8 generation supports Ethernet and Modbus TCP with a built-in web server, so you can check its status from your home network.
What you can do yourself, what to leave to an electrician
A clear split — you don't need to be an engineer to follow along.
- You can dream up the rules yourself — however you want the light and pump to behave
- Programming with function blocks is usually done by an electrician or installer
- Wiring inside the panel at mains voltage is always an electrician's job
- The logic is tested in a simulation before it ever runs live at home
- A copy of the program stays with you — you can review and change it later with a specialist
Frequently asked questions
Is LOGO! the same as a smart bulb?
No. A bulb only knows about itself, while a LOGO! box coordinates several devices — like a light and a sensor — under one shared rule.
Is it the same as a full smart home?
No. LOGO! suits individual tasks. If a house has many points to cover, a KNX system is the better fit.
Where does a family notice it most?
Most often in yard lighting, pump control and watering — places that need a simple, dependable rule.
What can I do myself, and what needs an electrician?
You're free to come up with the rules yourself. Wiring at mains voltage and programming are best left safely to an electrician.
How does the box know when it's dark or what time it is?
From connected sensors, like a light sensor, and an internal clock — the rule is programmed using simple function blocks.
Want a box like this in your own panel?
Tell us what rules you have in mind — we'll help you choose and install the right setup.