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H2F-BT12 Bluetooth Water Tank Gauge

H2F-BT12 Bluetooth Water Tank Gauge


Specifications for Bluetooth






AA Batt/12Volt




No Screen

Sender Lead

1.4 Meters

Ext Lead Option


All applications


Display Gal or Litres



Operating Systems:  IOS v10 or later / Android v8 or later


Includes: 1.4m Sender Lead & ​AA batteries (Aus Only)


Please Note: Hose connectors such as John Guest/Brass fittings are not included and need to be purchased separately.


Does not include 12v adaptor (optional).  Please do not wire 12v direct to gauges as this will cause issues with the gauge as the 12v adaptor includes a resistor to manage power surges.


1.4m & 3m extension leads are available for purchase on our website and must be used if you need additional length to fit your gauge.  Note:  Extension/Sender leads cannot be cut as this will void your warranty.

  • Overview

    Our exclusive H2F-BT12 Bluetooth Water Tank Gauge uses your phone as the display.  It is compatible with IOS v10 or later & Android v8 or later.


    All information is at your fingertips on your phone. This includes quantity & percentage of water remaining (in litres/gallons), programmable tank size, approx. battery state & refresh button are all displayed on the main screen of your App.


    No need for an internet connection and as long as you are within approx. 5 meters of your gauge you can check the number of litres left in your tank.


    Apps can be downloaded to multiple devices as all amounts and settings are stored in the Bluetooth module.


    Our senders and electronics are compatible with the majority of RV, Caravan & Marine water pumps and will even work with gravity fed systems.


    The Topargee Bluetooth Water Gauge is a MUST for those loving the adventure of bush, free camping and boondocking as you will always know how much water is in your tank and you can plan your adventure more accurately.


    Click here to purchase our water tank gauge packages or accessories


    To view the full Installation Guide, click HERE


    To View Our Testimonials, Click HERE


    Please do not wire 12v direct to battery without Topargee12v adaptor, using direct 12v will damage your gauge.

  • Top Reasons you MUST have a Bluetooth

    • Uses your phone as the display - perfect if you want to have your water usage information at your fingertips


    • No need for an internet connection 


    • The sender is fitted into the water line, plugged into the Topargee  Bluetooth module and then download the App


    • Easy installation,  there is no display to install. The sender is fitted into the water line, nothing is fitted or drilled to the tank


    • The module is powered by two AA batteries and there is an optional 12v plug-in adaptor so you can hard wire it to your 12v system


    • To see how much water is left in your tank simply hit Refresh on the App 


    • Stores the pre-set water capacity in memory


    • Measures water flow as opposed to water volume


    • Monitor water usage whether in the shower, washing your clothes or simply turning the tap on


    • Lets you know how much water is left in your tank litre by litre from a pre-set amount - not full/half full/empty


    • Most traditional water gauges will give an inaccurate reading if you park on an angle


    • One unit for multiple tanks that connect to the same pump, measuring up to 99,999 litres


    • Cost effective - stop wasting water by filling up unnecessarily​​​​​​​​​​​​​

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