Topargee H2F-BT12 Bluetooth RV Water Tank Gauge

Take the guesswork out of your RV freshwater supply. The Topargee H2F-BT12 Bluetooth Water Tank Gauge lets you monitor your water usage and remaining tank capacity from your smartphone—no tank drilling, no bulky display, and no internet connection required.

Full Product Description

The Topargee H2F-BT12 Bluetooth Water Tank Gauge is a smart, simple way to keep track of your RV’s fresh water supply. Instead of relying on factory tank sensors that often read in rough percentages—or quit working accurately over time—the Topargee system measures water as it flows through the line and displays your remaining water level on your smartphone.

This makes it a great upgrade for RVers, campers, van owners, boaters, and off-grid travelers who want a better idea of how much fresh water they actually have left. The gauge connects through Bluetooth and works without internet service, making it ideal for dry camping, boondocking, and remote travel. Topargee lists the Bluetooth range at approximately 16 feet / 5 meters.

Installation is straightforward because the sender installs in the water line rather than inside the tank. That means there is nothing to drill into the water tank, and one unit can be programmed for virtually any tank size. The app can display readings in gallons or liters, and the system is compatible with both iOS and Android devices.

For RV owners who like to know exactly what is happening with their rig, this is a practical upgrade. You can better track shower use, dishwashing, daily water consumption, and how much fresh water is left before the next refill.

 Key Features 

• Bluetooth water monitoring from your smartphone
• No display screen required — your phone becomes the display
• No internet connection needed
• Approx. 16 ft / 5 m Bluetooth range
• Displays in gallons or liters
• Installs in the water line — no drilling into the tank
• Works with RVs, trailers, boats, vans, and off-grid water systems
• Programmable for different tank sizes
• Helpful for dry camping and boondocking
• Compatible with iOS and Android devices

 Why RVers Like It

Most factory RV tank monitors are basic. They usually show empty, 1/3, 2/3, or full—and those readings are not always dependable. The Topargee H2F-BT12 gives RVers a more useful way to track fresh water by measuring the water flowing through the system and estimating the amount remaining.
That is especially helpful when you are camping without hookups. You can see how much water is being used for showers, washing dishes, brushing teeth, and general daily use. It can also help prevent unnecessary refills, meaning fewer trips to the water station and less guesswork during a trip.

 Installation Notes

 The Topargee H2F-BT12 sender installs into the RV’s water line and should be installed with the water flowing in the direction of the arrow on the sender. Topargee lists the sender thread specification as 1/2" BSP male, so adapters may be needed when connecting to common RV plumbing.

 Important: Extension or sender leads should not be cut, as Topargee notes, as this can void the warranty. 

  Specifications