Ever wondered, “Have I got enough water to stay another one or two days?”.  When dry camping (Boondocking), we all know the importance of keeping track of exactly how much water is left in your tanks. Our new H2F-FM Water Tank Gauge now features a larger backlit screen that actually shows the number of gallons (or litres) remaining in your tank, rather than the traditional full/half/empty display.  This makes it easy to know your average daily water usage and to help plan your next adventure. The good news is the sender is fitted in the hose line and there is nothing fitted to the tank.

We now have two exclusive RV & marine models, one suited more to the DIY aftermarket H2F-SM and our new flush mount H2F-FM designed to provide a superior appearance to more closely match the other displays in new RVs and boats.The perfect solution for tankless water systems! 

We now have two exclusive RV & marine models, one suited more to the DIY aftermarket H2F-SM and our new flush mount H2F-FM designed to provide a superior appearance to more closely match the other displays in new RVs and boats.

Breakthrough Design for the RV and Marine Industries


*Takes all the guess work out of your water supply.
*Displays number of gallons left in your water tank.
*Counts down gallon by gallon from a preset amount.
*Stop wasting fuel by filling up unnecessarily.
*Know how much is used for washing, showers etc.
*Know your daily water usage in gallons
*Essential for bush/ free camping.
*Fitted in water line, nothing is fitted to water tanks.
*One unit can be used for any number or size tanks.
​*Displays in gallons or litres.
*It can be used in conjunction with your current system to accurately know your capacity and usage.


N.B. Does not include hose connectors, see Connecting Sender Unit below.
Our new RV senders and electronics are compatible with all commonly available RV and marine water pumps and will even work with gravity fed systems.

H2F-FM        $135.95 
Flush Mount
New larger backlit screen
12 volt DC
Suitable for marine & RV applications
Flush bulkhead mounting
1.4 Mt Sender Lead.*
Displays in gallons or litres.
​Sender extension leads available.
SETTING AND AMOUNT MEMORY DEVICE.

*Sender leads can not be cut and joined,
​extension leads must be used.

Great RV Products © 2018