Exclusive Offer – Bluetooth Water Tank Gauge
Check Your Water Levels
From Your Phone
No tank sensors. No drilling. No dashboard install.
Just accurate water readings, every time.
- ✓ No display required - everything on your phone
- ✓ Installs inline with your hose - no tank access needed
- ✓ Know exact liters or gallons remaining
US$150 MSRP
Now $127.50 with 15% Discount
Shipped from the USA | 12-Month Warranty | Easy DIY Install
Your factory gauge is guessing.
You deserve better.
Most RV water gauges rely on probe sensors that estimate levels - not measure them. Build-up, tank shape and vehicle angle all affect the reading. That quarter tank warning could leave you stranded without water.
A Completely Different Way to Measure Water
Topargee does not rely on sensors inside your tank. Instead it measures the water flowing in and out, giving you a true, accurate reading based on actual usage.
- ✓ No internal tank sensors
- ✓ No tank drilling or modifications
- ✓ Stable, consistent readings
- ✓ Works with your existing RV water system
Measure what goes in. Measure what comes out. Know what is left.
Why Choose the Bluetooth Model
The Bluetooth Water Tank Gauge gives you all the benefits of Topargee flow-based monitoring, with the added simplicity of app-based viewing.
View via your device
Check your water level from your phone. No separate display needed.
Easy install
Runs on AA batteries or 12V power. Simple inline connection, no tank access needed.
No internet needed
Bluetooth connects directly to your phone. Works off-grid, no Wi-Fi or cell service required.
How It Works
Install Inline
Connect the flow sensor into your existing water line.
Set Your Tank Capacity
Enter your tank size in the app.
Track Your Water
See exact liters or gallons remaining on your phone.
What Customers Are Saying
Absolutely sensational! Simple to install and accurate. Only took about 30 mins to be completely live. I would highly recommend as a simple to use and effective water meter for your boat or van.
— Jn I.
It measures actual flow through the line rather than using tank sensors. The app connects quickly via Bluetooth without needing internet. I love that it counts down liter by liter.
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At $150.00, it's a smart investment for anyone who spends a lot of time off-grid. Installation was straightforward - I just fitted the sender into the water line and plugged it into the Bluetooth module. It also keeps a 7-day history, which helped me realize how much water we were using during showers. Whether you're in a boat or a caravan, this is a reliable way to keep track of your usage without drilling holes into your tanks.
— Mrs. H
Installation was quick and easy - took me about 10 minutes total. No connectivity issues and I like that it doesn't require internet - just Bluetooth, which is perfect for RV use.
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I was able to mount it inline between my accumulator and the rest of the RV plumbing with no issues. You do need to open the app and hit refresh to get an updated reading, but within a few seconds it shows your current water level accurately. Resetting after a refill is simple - just hold the reset button until it beeps. I saw some negative comments about the app, but honestly, it downloaded easily and has worked reliably for me.
— Mr. Mojo, CO
Could not be any more simple to install. It connected straight to the app and after putting in our tank size it immediately started tracking our water. Great battery life too.
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We do a lot of camping in places without water hookups, so knowing when to refill is critical. Just cut a section of the line out and install it - that's it. Battery life is going to be excellent so I don't have to keep changing them. Overall a great product and great value for anyone with a camper or RV.
— Brit
No Display. No Dash Work. No Hassle.
The Bluetooth model is designed to keep installation simple. There is no display to mount, no dashboard wiring to run and no need to access the tank.
- ✓ No display wiring required
- ✓ No tank access needed
- ✓ Easy Installation
- ✓ Step-by-step instructions included
A straightforward DIY install for most RV & marine setups.
Real customer - Topargee in the wild
Built for Off-Grid Travel
The Bluetooth connection works directly between your phone and the gauge. No cell service is needed so you can still check your water levels when you are off-grid, boondocking or out of range.
Whether you are in a campground, on a remote trail, boondocking, at a marine anchorage or parked up for the night, your water data stays close at hand.
Why Topargee Bluetooth Is Different
| Standard Factory Gauge | Topargee Bluetooth |
|---|---|
| ❌ Inconsistent, inaccurate readings | ✓ Precise liter/gallon tracking |
| ❌ Internal probes foul over time | ✓ No internal sensors or drilling into tank |
| ❌ Inaccurate reading when on an angle | ✓ Accurate on uneven ground & water |
| ❌ No phone visibility - fixed display only | ✓ Check levels from your phone, anywhere |
Common Questions
What vehicles and setups is the Bluetooth Tank Gauge compatible with?
The Topargee Bluetooth Tank Gauge is designed for a wide range of applications including RVs, motorhomes, camper vans, overland rigs, travel trailers, fifth wheels, boats, marine vessels and 4x4/off-road vehicles. It can also be used in off-grid and custom water tank setups. Because it installs inline and doesn't rely on internal tank sensors, it works with most fresh water systems using a pump.
Do I need internet or cell service to use it?
No. The Bluetooth connection works directly between your phone and the gauge.
How hard is installation?
For most setups, installation is a straightforward inline DIY job with no display mounting and no tank drilling.
Do I need to mount a screen inside my RV?
No. The Bluetooth model uses your phone so there is no separate display to install.
Can I use liters or gallons?
Yes. The app allows you to view your readings in liters or gallons.
What if I need help?
Step-by-step instructions are included and support is available if needed.
Is it shipped from the USA?
Yes. US orders are shipped from the USA.
Do I need to remove my existing tank gauge?
No. The Topargee Bluetooth Tank Gauge is designed to work independently from your existing tank gauge system, so there is no need to remove factory sensors, probes or gauges. The system installs inline on your water line and tracks water usage by measuring flow, allowing you to keep your original gauge while gaining a far more accurate reading of the water remaining in your tank.