TRMNL is an e-paper dashboard company that sells low-power e-ink displays, including the TRMNL OG and a larger TRMNL X. A web dashboard controls what each display shows, using playlists of plugins such as calendars, weather and custom data screens.
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TRMNL is not a smart home controller. The display polls TRMNL's server, which returns a pre-rendered image, and smart home platforms feed it data through plugins and webhooks. TRMNL publishes an official Home Assistant add-on and an official Homey app, and a Companion app for iPhone can send Apple Home data to a private plugin.
That suits people who want a glanceable, always-on screen for energy, climate or home status without a lit panel, and who are happy to build or install plugins. It is weaker as a two-way device: it shows information rather than controlling anything, there is no voice assistant or Matter support that we found, and webhook updates are rate-limited unless the display is pointed at a self-hosted server.
Source: TRMNL help center: public plugins and recipes
The main control surface. Playlists, layouts, groups and plugins are set up in the browser. TRMNL's pages we opened did not list a store app for this.
Builds plugins from Apple data. It sends calendars, Apple Health, Apple Home and Reminders data, or Shortcuts input, to a private webhook plugin. TRMNL says it cannot manage playlists, account or device settings.
Turns an Android device into a TRMNL display. TRMNL's help article lists it with an open source repository.
Community app by Hossain Khan for managing TRMNL devices on the go, listed in TRMNL's help center. Not published by TRMNL itself.
Official supported by the brand Community built by someone else Not found searched, nothing found Unconfirmed sources conflict or could not be opened
| Platform | Status | What it means | Sources |
|---|---|---|---|
| Connection | |||
| Cloud polling | Yes | TRMNL's docs say the display contacts TRMNL's server and never the other way round, and the server returns a pre-rendered image. The home page describes this one-way design as keeping outsiders out of the local network. | TRMNL docs TRMNL home page |
| Wi-Fi | Unconfirmed | The pages we opened describe a wireless display reaching the server over the internet but did not state radio details such as band, so we could not confirm specifics. | TRMNL docs |
| Bluetooth, Zigbee, Z-Wave, Thread | Not mentioned | None of these are mentioned on the TRMNL pages we opened. | TRMNL home page |
| Matter | Not found | No Matter support mentioned on TRMNL's home page, and none found in the docs we read. | Searched, no source |
| Self-hosted server (BYOS) | Official | The docs describe pointing a TRMNL device at your own server, with required api/setup and api/display endpoints. TRMNL's GitHub organization lists several server implementations, including Terminus (Ruby, MIT), and also bring-your-own-device options for other e-ink hardware. | TRMNL docs TRMNL on GitHub |
| Voice assistants and ecosystems | |||
| Google Home | Not found | No integration found on TRMNL's pages. | Searched, no source |
| Amazon Alexa | Not found | No integration found on TRMNL's pages. | Searched, no source |
| Apple Home | Official | The TRMNL Companion app for iOS lists Apple Home among the data it can send to a private webhook plugin, with each data type needing explicit permission. This shows Home data on the display; it is not a HomeKit accessory. | TRMNL Companion help article TRMNL blog: Companion for iOS Apple Home accessories list |
| Samsung SmartThings | Not found | No SmartThings plugin found in the TRMNL pages and community list we opened. | Searched, no source |
| Open platforms and developer access | |||
| Home Assistant | Official | TRMNL's help center documents a Home Assistant Screenshot plugin and a TRMNL HA add-on that captures dashboards, dithers them for e-paper and pushes them by webhook. The add-on lives in TRMNL's GitHub organization (trmnl-home-assistant). Public plugins also include a Home Assistant weather station and a to-do list. Community alternatives exist, such as a HACS sensor component and entity plugins, with user reports of install problems and webhook size limits. | Home Assistant Screenshot (TRMNL help) TRMNL on GitHub Community forum thread Awesome TRMNL list |
| Homey | Official | TRMNL publishes a Homey app (listing author TRMNL Official) that pushes device states, room temperatures and power use to a TRMNL screen through a push URL, with ready-made energy, climate, home status and zone screens. It is listed for Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server, requires Homey 12.0.0 or newer, and does not list a Homey Bridge. It is open source and each push counts against an hourly limit. | Homey app page TRMNL help: public plugins |
| openHAB | Not found | No openHAB plugin found in TRMNL's open source plugin list or the community list we opened. | usetrmnl/plugins |
| Node-RED | Not found | No dedicated Node-RED integration found. TRMNL accepts generic webhook POSTs, so any tool that can send HTTP requests can feed a private plugin. | TRMNL docs |
| Hubitat | Not found | No integration found in the lists we opened. | Searched, no source |
| Domoticz | Not found | No integration found in the lists we opened. | Searched, no source |
| Control4 | Not found | No integration found in the lists we opened. | Searched, no source |
| Philips Hue | Not found | No integration found in the lists we opened. | Searched, no source |
| IFTTT | Unconfirmed | IFTTT and Zapier are not mentioned in the TRMNL docs and plugin pages we read, so we could not confirm either. | Searched, no source |
| Webhooks and private plugins | Official | Private plugins take data posted to a plugin-specific webhook (merge_variables) or fetched by polling, and are rendered with Liquid templates. Documented limits are 12 webhook requests per hour and 5kb payloads, or 30 and 10kb with TRMNL+. | TRMNL docs |
| Public API | Official | TRMNL's docs cover a device Display API (GET /api/display with an access token, 40 requests per device per 5 minutes) and a public API with account API keys that start with trmnl_. The full reference is at trmnl.com/api-docs, which we did not open. | TRMNL docs |
| Open source firmware | Official | The device firmware (trmnl-firmware) is published in TRMNL's GitHub organization under GPL-3.0, alongside an Android app (MIT) and plugin tooling. | TRMNL on GitHub |
Checked 11 November 2026 against the brand's own pages, app store listings and each project's own page. “Not found” means we searched and found nothing, not that it is impossible. Compatibility changes often. Spot an error? Tell us and we will fix it.
Not that we could find. No Matter support mentioned on TRMNL's home page, and none found in the docs we read.
Not that we could find. No integration found on TRMNL's pages.
Not that we could find. No integration found on TRMNL's pages.
Yes, officially. The TRMNL Companion app for iOS lists Apple Home among the data it can send to a private webhook plugin, with each data type needing explicit permission. This shows Home data on the display; it is not a HomeKit accessory.
Yes, officially. TRMNL's help center documents a Home Assistant Screenshot plugin and a TRMNL HA add-on that captures dashboards, dithers them for e-paper and pushes them by webhook. The add-on lives in TRMNL's GitHub organization (trmnl-home-assistant). Public plugins also include a Home Assistant weather station and a to-do list. Community alternatives exist, such as a HACS sensor component and entity plugins, with user reports of install problems and webhook size limits.
Not that we could find. No SmartThings plugin found in the TRMNL pages and community list we opened.
Yes, officially. TRMNL publishes a Homey app (listing author TRMNL Official) that pushes device states, room temperatures and power use to a TRMNL screen through a push URL, with ready-made energy, climate, home status and zone screens. It is listed for Homey Cloud, Homey Pro, Homey Pro mini and Self-Hosted Server, requires Homey 12.0.0 or newer, and does not list a Homey Bridge. It is open source and each push counts against an hourly limit.
Not that we could find. No integration found in the lists we opened.
Answers come from the sourced table above. See how TRMNL compares with all brands on the smart home brand statistics page.