The heart of an AQUmi network — collects sensor data, shows it on its own screen and passes it on: locally, over a webhook or to Home Assistant.
The colour display shows the current temperature with its status, the time and date, the tank name, the local IP address and the sensor status — without opening any app. Screen brightness is adjusted from the web panel to suit the room's lighting. The full data view is also available in the web panel.
TempOne pairs with DisplayOne automatically over the local WiFi. Up to 6 sensors per DisplayOne. AQUmi One (pH/TDS) is added separately, by entering its IP address in the panel.
DisplayOne signals when the temperature drops below or rises above the set limits — for example when an aquarium heater or a terrarium heat lamp fails, or a tank overheats on a hot day. The system also tells a sudden, short-lived change typical of routine maintenance (such as a water change) apart from a real failure, cutting down on false alarms.
Remote viewing in the AQUmi Portal, Home Assistant over MQTT with entity auto-discovery, and a webhook to your own system — all optional.
Viewing the data is always open on the local network. Changing settings, pairing and updates can be protected with a password.
DisplayOne checks for and installs digitally signed firmware updates over the network (OTA) by itself — and rejects any other — and can pass them on to paired TempOne sensors, even when the network doesn't let them reach the internet directly.
| Display | Colour LCD, live temperature and sensor status, brightness adjustable from the web panel |
|---|---|
| Connectivity | WiFi 2.4 GHz |
| Sensors | up to 6 at a time |
| Power | 5 V over USB |
| Integrations | AQUmi Portal, MQTT / Home Assistant (auto-discovery), HTTP webhook |
| Updates | automatic, over the network (OTA), digitally signed |
| Access | web panel on the local network; changes can be password-protected (optional) |
Plug DisplayOne in. On first start it creates its own WiFi network (named AqumiDisplayOne-…) — connect to it with your phone or laptop.
On the setup page that opens, pick your home WiFi from the list (or type it in) and enter the password. DisplayOne saves it and restarts on your network.
Open the DisplayOne panel in a browser (its local address is shown on its screen). We recommend setting a password under "Dashboard login" — changes then require logging in.
Under "Pair devices", click "Enable pairing", then plug in an AQUmi TempOne — it finds DisplayOne by itself and shows up as waiting.
Approve the sensor in the waiting list — it receives your WiFi details and joins your network for good.
From then on the sensor is listed as active, with its current temperature.
Step-by-step guide for every device: manual.
Yes — live temperature, alarms and sensor pairing all run on your local WiFi. The internet is only needed for firmware updates (OTA), remote viewing in the AQUmi Portal and external integrations (Home Assistant, webhook), if you use them.
DisplayOne and the sensors reconnect automatically when the network is back. Settings and paired sensors stay saved.
No. DisplayOne works fully locally, with no cloud account. A Google account is only needed if you want remote viewing in the AQUmi Portal. Home Assistant and the webhook are optional integrations you set up yourself, on your own terms.
No — there is one shared pair of limits (18–30°C by default) for all connected temperature sensors.
Up to 6 sensors per DisplayOne, added at any time through the same pairing process.