Monitor your water tank levels from the great indoors.

HiLo is the smarter way to keep an eye on your water levels. Groundbreaking radar technology, combined with smartphone capability, lets you know how much is in the tank — wherever you are.
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When levels get low, you need to know.

HiLo tank monitors provide accurate and timely updates, ensuring you never run out of water unexpectedly.

Convenience and Peace of Mind

Eliminate the need for manual checks or guesswork. Enjoy peace of mind knowing that you're always aware of your water supply.

Reduce water wastage

Find out fast when you have a water issue so it can be repaired quickly, and save precious water.

How it works

A radar level monitor installed on the top of your tank detects the water level with unbeatable accuracy. The monitor connects to your household wifi network, and transmits the level to the HiLo app.

You can download the HiLo app from Google Play or the App Store. It's super-simple to set up, whatever kind of smartphone you have.
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A better way to measure

Our radar detects liquid levels with unbeatable accuracy and no probe to rust or deteriorate.
0.5% accuracy
No sensor maintenance or cleaning required
5+ year battery life expectancy
IP68 waterproof and built to last

Always on alert

Just in case you don't constantly check the app, it sends you notifications if your level gets low
Receive a txt to your mobile
Email and in-app notifications
High level, Low Level, and Leak Detection
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DIY Installation

The monitor is easy to install on plastic, concrete, or steel tanks - as long as you have a drill. Simply make a small on the top of your tank for the sensor to see through, attach it to the top of the tank with the provided screws, then you're good to go.
Receive a txt to your mobile
Email and in-app notifications
High level, Low Level, and Leak Detection

Find a solution that fits your needs

All prices in NZD and include GST

HiLo WiFi Tank Monitor

One off cost per tank.
This includes...
Connects to your home wifi network
Replaceable battery with 5+ years life expectancy
0.5% Accuracy
Supports tanks up to 3.5m tall
Checks alarms every 15 minutes
DIY Installation

Basic Subscription

No annual charges, ever.
This includes...
Supports up to 3 tank monitors
1 User
Unlimited app alerts
Updates every 6 hours
Browse 7 days of tank level data
Low Level Alarm

Premium Subscription

Billed annually. Per tank.
This includes...
Supports unlimited tank monitors
Share with unlimited Users
Unlimited app and email alerts
Select 2, 4, or 6 hour update rates
Browse up to 3 years of tank level data
Low Level Alarm
High Level Alarm
Leak Detection Alarm
10 SMS Alerts/month
Webhooks, REST API and other integration options.
Data Export available

Don't have wifi at your tank?

Check out our 4G tank monitor, designed for monitoring remote tanks.

Want to talk?

Enter your details and our friendly team will give you a call.
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Frequently asked questions

How often do I get level updates?
Your tank monitor will check the level every 15 minutes. If it detects an alert level, it will notify you straight away. Otherwise, you'll get a full picture of what's happened in the tank every 6 hours. If you need to, you can reduce this time to 4 or 2 hours but this will reduce the life of your battery. You can change the update rate easily in the app.
Can I change the battery?
Yes, the battery is easily replaceable and can be ordered from us at a cost of $55 + postage.
How do I know if I have wifi signal at my tank?
You can check the wifi signal at your tank using your smartphone. Simply go to the tank with your phone and then check to see if you are still connected to your home wifi.
Do I need to be in line-of-sight with my tank to check the level?
No, once you have set your monitor up, you can check the level from anywhere you have internet access. You don't need to be on your home wifi network, or have line of sight to the tank.
Can’t find the answer you’re looking for? Please chat to our friendly team.