The Problem
Getting Modbus data into Home Assistant is more effort than it should be.
- USB adapters tied to a Raspberry Pi
- ESPHome configs and YAML debugging
- Register mapping and trial-and-error
- Devices stuck wherever your server happens to be
Modbus Anywhere
Built for Home Assistant energy monitoring
Install at the meter. Read from anywhere.
Get Modbus data into Home Assistant in minutes - no USB dongles, no ESPHome, no running cables across your house.
Expected price: £59.
Limited initial run of 50.
Be first to know when pre-orders open.
2 minute setup
Demo video coming soon
From power-on to live data in Home Assistant.
Plug in. Connect. Data appears in HA.
The Solution
Stop fighting Modbus setups.
- Install it next to your meter or device
- Connect over Wi-Fi
- Stream data directly into MQTT
No wiring back to your server. No complex setup.
Built for Home Assistant
Designed specifically for getting real-world energy data into Home Assistant quickly.
MQTT that fits Home Assistant
- Publishes to MQTT with clean topic structure
- Works with standard HA MQTT integrations
Polling that stays out of the way
- Reliable polling with minimal configuration
- Simple web-based setup when you need adjustments
Ready for common meters
- Works out of the box with Eastron meters
- REST access is available alongside MQTT streaming
Start here
Eastron SDM120 / SDM220 / similar
- Pre-configured registers
- Real-time voltage, current, power, energy
- No manual mapping required
Plug it in, and your data is ready.
Works with other platforms too
- OpenEnergyMonitor
- Node-RED
- Custom systems via MQTT or REST
Anything that can consume MQTT can use this.
Comparison
Why not just use a USB dongle?
| USB Dongle + Pi | ESPHome | Modbus Anywhere | |
|---|---|---|---|
| Setup time | Medium | High | Minutes |
| Location | Fixed to Pi | Flexible | Install anywhere (Wi-Fi) |
| Config effort | Medium | High | Minimal |
Flexible installation
Install it where your device is - not where your server is.
- Connect via RS-485 (Modbus RTU)
- Mount on a DIN rail alongside your equipment
- Power via USB or 5V DC terminals
What you get
- Modbus RTU to WiFi bridge
- MQTT streaming + REST access
- Simple web-based configuration
- Reliable polling for continuous data