--- title: "APsystems ECU Reader" description: "APsystems ECU Reader is a Marketplace integration for Home Assistant. It has 924 installs sharing analytics, works locally and was last updated October 19, 2026." canonical: "https://vulpo.app/integrations/marketplace/haedwin-homeassistant-apsystems-ecu-reader" url: "https://vulpo.app/integrations/marketplace/haedwin-homeassistant-apsystems-ecu-reader.md" last-updated: "2026-10-22" version: "1.4" --- # APsystems ECU Reader > APsystems ECU Reader is a Marketplace integration for Home Assistant. It has 924 installs sharing analytics, works locally and was last updated October 19, 2026. APsystems ECU Reader is an integration that queries APsystems ECU hubs locally over the network. It extends an earlier community integration and adds sensors, binary sensors, numbers, buttons and switches to Home Assistant. Individual inverters can be switched on and off, and per-panel maximum power limiting is available, though both depend on the ECU model. It also covers L2 and L3 voltages for three-phase inverters, Zigbee signal strength, online sensors for each inverter, and several ECU hubs at once. Data checks and a cache keep values in place when the ECU times out or returns incomplete data. It is set up in the UI, with options for the ECU address, query interval, retries, cache count before an automatic reboot, and graph updates while inverters are offline. Automatic summary of the README and code of HAEdwin/homeassistant-apsystems\_ecu\_reader. Something wrong, or are you the maintainer and want your own text here? [Get in touch](https://vulpo.app/contact) [Open in My Home Assistant](https://my.home-assistant.io/redirect/hacs_repository/?owner=HAEdwin&repository=homeassistant-apsystems_ecu_reader&category=integration) On Home Assistant 2026.11 or newer? [Open it in the Marketplace](https://my.home-assistant.io/redirect/marketplace_repository/?owner=HAEdwin&repository=homeassistant-apsystems_ecu_reader&category=integration) ## Supports - **Works locally**: Talks to your devices on your own network. No vendor cloud in between. - **From the Marketplace**: Installed through the Marketplace, formerly HACS. - **Actively maintained**: Its author released or pushed a change in the last six months. ## Setting it up Install it from the Marketplace and restart Home Assistant, then add it under Settings, Devices and services. ### APsystems ECU Configuration - **ECU IP address (follow connection method table in readme)** - **ECU query interval in seconds (minimum 300 recommended)** - **Retries when ECU fails to repond** - **Cache count before auto ECU reboot (ECU-R-Pro and ECU-C models)** - **Update graphs when inverters are offline** - **Specify SSID (ECU-R-Pro and ECU-C models only)** - **Specify password (ECU-R-Pro and ECU-C models only)** ### After setup - **ECU IP address (follow connection method table in readme)** - **ECU query interval in seconds (minimum 300 recommended)** - **Retries when ECU fails to respond** - **Cache count before auto ECU reboot (ECU-R-Pro & ECU-C models)** - **Update graphs when inverters are offline** - **Specify SSID (ECU-R-Pro and ECU-C models only)** - **Specify password (ECU-R-Pro and ECU-C models only)** Texts from the code of [HAEdwin/homeassistant-apsystems\_ecu\_reader](https://github.com/HAEdwin/homeassistant-apsystems_ecu_reader). ## From the README > Over 1000 (measured) active installations, the estimated total number of users is 4,000+. From the README of [HAEdwin/homeassistant-apsystems\_ecu\_reader](https://github.com/HAEdwin/homeassistant-apsystems_ecu_reader#readme), [Apache License 2.0](https://spdx.org/licenses/Apache-2.0.html). Shortened. ## At a glance - Kind: Marketplace integration - Category: [Energy](https://vulpo.app/integrations/category/energy.md), Solar and batteries - Brand: [APsystems](https://vulpo.app/integrations/apsystems.md) - Number: 924 installs sharing analytics; 212 GitHub stars - Connection: Works locally - Upkeep: Updated in the last 6 months - Needs: Needs the Marketplace (HACS on 2026.10 and older) - Latest version: 2.15.0, last updated October 19, 2026 - Domain: `apsystems_ecu_reader` - Source: - Issues: - Screenshot: https://vulpo.app/integrations-img/1d5751deb9db5915.webp (from HAEdwin/homeassistant-apsystems\_ecu\_reader's README) In Vulpo: Quick Toggle card, Button card, Chart card, Apple Watch, Control Center ## Other ways in for APsystems | Name | Kind | Installs or stars | Connection | Upkeep | | --- | --- | --- | --- | --- | | [APsystems](https://vulpo.app/integrations/core/apsystems.md) | Built-in integration | 1.3k installs sharing analytics | Works locally | Part of Home Assistant | | [APsystems Storage](https://github.com/Echo000926/APsystemsStorageHAPublic) | Marketplace integration | 1 installs sharing analytics | Works locally | Updated in the last 6 months | | [APsystems Modbus](https://github.com/christianvaes/homeassistant-apsystems_modbus) | Marketplace integration | No installs sharing analytics yet | Works locally | Updated in the last 6 months | Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about) Last updated 2026-10-22. Source: https://vulpo.app/integrations/marketplace/haedwin-homeassistant-apsystems-ecu-reader --- - HTML version of this page: https://vulpo.app/integrations/marketplace/haedwin-homeassistant-apsystems-ecu-reader - Site index for agents: https://vulpo.app/llms.txt - Everything in one document: https://vulpo.app/llms-full.txt - All pages: https://vulpo.app/sitemap.xml