Build better systems. Keep your customers.
Partner with HomeMaster for open DIN-rail building automation hardware — with partner pricing, direct access to the engineers who build it, and your company on the installer map where customers find you.
Nothing between you and the hardware
The range you would be installing
Two ESP32 controllers, an OpenTherm gateway and eight expansion modules, all on one RS-485 pair. Every unit is a standard Modbus RTU slave that keeps its configuration and its logic in its own flash.
Why partner with us
Why add another hardware vendor to your business?
You already have options. Here is what these modules do that the alternatives do not.
Logic lives in the module
Each module runs its own logic in its own flash. Even if the controller, network or server is down, lighting, leak protection and alarms keep working — which is what keeps your phone quiet at night.
Simple, open toolchain
Modules are configured in a browser over USB-C. No drivers, no apps, no licences, no dongles, no per-site activation, and nothing anyone has to be sent on a course for.
The toolchain is open, and not ours
The controller side is ESPHome, running as a Home Assistant add-on. Both are open, both have thousands of contributors, and both move faster than any vendor configuration tool. We publish a ready-made ESPHome package per module; it is plain YAML in a public repo, so you can fork it or write your own.
Open, and cheaper to live with
Published register maps, open firmware (MIT) and hardware (CERN-OHL-W v2). Any Modbus master will work, so the system you hand over does not depend on us still existing. No licences and no per-site fees either, so your quote competes on the hardware.
What you get
Support that does not stop at the invoice.
Everything a partner account includes, the discount aside.
Help on your first project
We guide you through module selection, review your cabinet schematic, prepare the ESPHome configuration and support you through commissioning. You do not have to learn the platform alone.
Full documentation
Wiring diagrams, manuals and the complete Modbus register maps, all public on GitHub.
Direct access to our engineers
Talk to the people who write the firmware. No ticket queue, just real support.
Early access
Get new hardware and firmware before anyone else.
Partner pricing
One rate across the whole line. It does not depend on volume and it does not expire, and there is no joining fee, no minimum order and no annual quota.
On the installer map
Your company, region, site and contact details shown on our public partner map.
Our partners
Installers in eight countries, and room for a lot more.
One of them found us; the rest answered a direct approach and stayed. Not a sales force — a network built one company at a time.
View partner mapWho it fits
- Two to ten people, six to twelve projects a year
- Houses, apartments and buildings
- Electrical contractors and system integrators
- Building automation, HVAC and energy specialists
- Home Assistant professionals doing client work
Automation as the trade, not as a sideline between roofing and photovoltaics. Already delivering on Home Assistant? Everything here is familiar on day one. Working on KNX, Loxone or Shelly instead? The modules are plain Modbus RTU slaves and sit on the bus next to what you already install. And if you design and specify but subcontract the electrical work, you fit: the electrician builds the cabinet, the integrator writes the logic.
How it works
- 1
Enquiry comes in
Email, phone or the site. We pass it to the partner covering that area, with the customer's details.
- 2
You quote, install, invoice
You handle the project and keep the margin on it; like any wholesale supplier we earn on the hardware, not on a cut of your work. Our shop is open to anyone, so a customer can buy modules without you — what we do not do is take the installation job or approach your customer after an enquiry has been passed on.
- 3
No territories, no country distributor
Nobody is handed a country and runs everyone else through it. Several companies in one country is normal; an enquiry goes to the partner active in that region, and position on the list goes by recent activity.
- 4
Your projects are the shop window
Finished projects you send us get published, on the site and in our subreddit, credited to you. Most customers pick a partner from the map and go to them directly, without us in the middle.
Ready to join?
Tell us about your company and your experience. We read every application individually and reply within two business days.
Hardware is CE marked and Europe is our current focus. No UL or FCC yet; partners elsewhere are welcome if you will handle local certification.
Application
Tell us about your company
Every application is read individually and we reply within two business days. This is a conversation, not an approval queue: if there is a fit we will say so, and if there is not we will say that too.