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Before Purchase

How does the sensor work?

The sensor is a small device containing a microwave sensor. It takes readings at least every 8 hours, and the results are sent to the Aquilo app.

What is included in the Aquilo sensor kit?

For the WIFI sensor, the kit includes:

  • Transmitter – mounted anywhere on the inspection chimney wall of the tank

  • Receiver – mounted inside the house or another room with WiFi signal. The distance between transmitter and receiver should be up to 20 m.

  • Antennas

  • Mounting plate with screws

  • “Aquilo” app for phone and web browser

Where can I install the sensor?
Anywhere! You can place the transmitter inside a septic tank or rainwater tank. The sensor is wireless, so you can safely install it even in tanks located in driveways—nothing will protrude. The transmitter works fine even with heavy cast iron covers.
Does anything stick out from the sensor’s surface?

No, nothing protrudes from the sensor. There is no probe or any submerged object in the tank. Nothing sticks out externally, so the sensor can be installed in tanks under driveways.

I have a pump in my tank. Will it interfere with the sensor?

The pump will not interfere with the sensor. If you have doubts, contact us — we’ll definitely help! Before consulting, take photos of the tank interior to help us advise you better.

I have several tanks. Can I connect multiple sensors at once?


Yes, you can connect multiple transmitters to one receiver, e.g., if you have several tanks. You can also connect several transmitters to one app account, so you see data from all tanks in one place.

You can also buy a receiver + multiple transmitters with a neighbor; each of you gets separate accounts and sees only your own readings.

Connecting multiple transmitters to one account is available only with PREMIUM and PRO LTE subscription plans.

Is there a warranty on the sensor?

Yes, the Aquilo device has a 2-year warranty. Detailed warranty conditions are available . here.

What if the transmitter doesn’t work in my tank?
If your tank is too far from the house and the transmitter loses signal with the receiver, we suggest installing the Aquilo LTE Liquid Level Sensor, which works via cellular network and does not require WiFi access. If it still doesn’t work, a money-back guarantee applies.
Does the sensor work during winter?


Yes, the device works well at low temperatures. The Aquilo sensor easily handles winter and autumn conditions.

Temperature and humidity do not affect the measurement but may affect whether data is transmitted via radio from the transmitter to the receiver.

Do I have to buy a subscription?


Choosing the Aquilo WIFI sensor, subscription purchase is not mandatory. Access to the Aquilo app for monitoring one tank is free forever.

Purchasing a PREMIUM subscription unlocks extra features, e.g., access to more historical data (2 years), SMS sending, and updates more frequently than every 8 hours.

Choosing the Aquilo LTE sensor requires a subscription. This fee covers, among other things, the SIM card inside the sensor, which enables sending readings to the cloud.

During Installation

How do I install the Aquilo sensor?
The sensor is installed anywhere on the inspection chimney wall. Installation on the cover is also possible but only for plastic covers.
How to configure the Aquilo sensor in the app?

After installing the sensor in the tank and/or connecting the receiver to power (Aquilo WIFI), you must configure them. Download the Aquilo mobile app or use the web app.

For the home Aquilo WIFI sensor, during setup, enter the WiFi network name and password the sensor will connect to.

For the professional Aquilo LTE sensor, simply scan the QR code on the device in the mobile app.

In the app, you can name your tank, set the liquid distance (cm) that the transmitter will treat as 100%, and configure notifications. If nothing is set, the sensor defaults to 30 cm as 100%. You don’t need to set the empty tank level (tank depth) because the sensor learns this after the first emptying.

How to integrate the sensor with Home Assistant or Loxone?
The sensor can be integrated with home automation systems Home Assistant or Loxone. Integration instructions are available below in Download Materials or at aquilo.io/manual.

Aquilo App

What is the Aquilo app for?

We created the app so you have constant access to tank content info without needing to be home. The app shows:

  • Current liquid level in the tank
  • Approximate filling time (device forecasts based on filling rate)
  • Notifications when tank level is critical
  • History of measurements for comparison

The app notifies you about emptying time and can send an SMS to your waste disposal company.

Some features are available only in PREMIUM and PRO LTE versions. Check which plan suits you best.

Can the sensor work without the app?
The app is not mandatory, but without it, the sensor cannot notify about tank status. The sensor itself has no signal lights.
What can I use instead of the app?
Besides the mobile app, there’s a web app accessible via browsers, providing the same info as the mobile app, but no notifications or SMS are sent from the web app.
Can the sensor contact the waste company via SMS?
Yes, Aquilo can send SMS to your waste disposal company! This is available in PREMIUM and PRO LTE versions.

You can select a contact and message text in the app. When the tank needs emptying, you get notified. From the app, tap the message icon to send the SMS—messages are not sent automatically.

Using the sensor

Does the sensor need constant internet access?
No, it doesn’t need to be always connected to WiFi. Without internet, readings won’t appear in the app. Some users share internet access only when home, and it works.

The professional Aquilo LTE sensor sends readings over the cellular network, so WiFi isn’t required.

How can I change the WiFi network for the sensor?
Reset the receiver by holding the RESET button on its right side. The LED will start blinking. Then, in the Aquilo app under Settings → WiFi, scan and select the new network, enter the password, and connect. Within a minute, the sensor should work on the new network, indicated by a blue LED.
What batteries does the sensor use? How often to replace?
The transmitter uses a 3.6V lithium battery R14 “C.” Expected battery life is up to 2 years, depending on environment.
Can I take a reading on demand?
Currently, no—due to battery optimization, the sensor reads at least every 8 hours and sends results to the app.
Is the sensor waterproof?
Yes, fully waterproof. Submerging won’t damage it.
What happens if I don’t renew the subscription?
The home Aquilo WIFI sensor keeps working, readings stay in the app, but some features will be disabled or limited. Functions available without an active subscription are described in the BASIC plan.

The professional Aquilo LTE sensor won’t work without an active PRO LTE subscription. You can renew anytime, and data will become available again.

Download materials

Aquilo WIFI CS-04 datasheet – Polish download here.

Aquilo WIFI CS-04 installation manual – Polish download here.

Aquilo WIFI CS-04 technical installation / WiFi change guide – Polish download here.

Aquilo LTE CS-05 datasheet – Polish download here.

Aquilo LTE CS-05 installation manual – Polish download here.

Home Assistant integration guide – Polish download here.

Loxone integration guide – Polish download here.