A temperature sensor that keeps a constant eye on your aquarium or terrarium. Readings go to AQUmi DisplayOne on the same network — or, without DisplayOne, straight to the AQUmi Portal.
The direct reason was a real case: a heater failure in a client's aquarium, noticed too late, when the water had already cooled down. AQUmi TempOne gives a steady, continuous view of the temperature — not only during a service visit. The same idea works just as well in a terrarium, where keeping the air or substrate temperature stable is what matters.
A waterproof probe measures the water temperature in an aquarium, or the air or substrate temperature in a terrarium, reporting to DisplayOne continuously.
The sensor joins the WiFi and finds AQUmi DisplayOne on the same local network by itself — no manual setup.
If there's no DisplayOne in range, it opens its own setup network — just enter your WiFi details. From then on it works independently: it sends readings to the AQUmi Portal and shows them on its own simple page, with no DisplayOne and not even a portal account needed.
The sensor runs continuously on wired power (5 V/USB) — it keeps a steady WiFi connection, so readings and alarms are available without delay.
| Measurement | Water, air or substrate temperature, waterproof probe (DS18B20 sensor, ±0.5°C accuracy per the manufacturer's specification) |
|---|---|
| Connectivity | WiFi 2.4 GHz |
| Power | 5 V over USB, continuous operation |
| Viewing data | on AQUmi DisplayOne (on its screen) or standalone, with remote viewing in the AQUmi Portal |
| Requirements | Optional: AQUmi DisplayOne on the same local network — it can also work on its own |
| Updates | automatic, over the network (OTA), digitally signed — whether it works with DisplayOne or on its own |
With AQUmi DisplayOne: the full step-by-step pairing guide is on the AQUmi DisplayOne page. In short: turn on pairing on DisplayOne, plug the sensor in, approve it in the waiting list. Without DisplayOne: the sensor opens a temporary WiFi network for setup — connect to it with your phone or laptop, enter your home network details, and you're done. More in the manual.
Yes — if it finds no DisplayOne nearby, it opens its own setup network. Once you give it your WiFi details it works on its own: it sends readings to the AQUmi Portal and shows them on its own simple page in a browser.
Yes, only the waterproof probe goes into the water — the sensor's electronics stay outside the aquarium. In a terrarium the probe doesn't need to be submerged — it can simply sit in the air or in the substrate.
No — the current version is powered permanently over a USB cable (5 V) and runs continuously.