33 Fishermans Road, Maroochydore QLD 4558
33 Fishermans Road,
Maroochydore QLD 4558

Topargee Surface Mount Water Tank Gauge H2F-SM + 3mt Extension Lead RV’s Boats

$104.00 inc GST

See estimated shipping cost based on quantity (excl. GST)

SKU H2F-SM / H2F-L3 Category Tag

Topargee Surface Mount Water Tank Gauge H2F-SM + 3mt Extension Lead RV's Boats


Topargee Surface Mount Water Tank Gauge H2F-SM 
3mt Extension Lead 
Caravans, Motorhomes, RV’s, Boats, 4×4’s


Breakthrough Design for the RV and Marine Industries
*Takes all the guess work out of your water supply.
*Displays number of litres left in your water tank.
*Counts down litre by litre 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 litres
*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 (Min flow 1.5 L/M).
Surface mount.
Very easy installation.
2 x AA battery power (supplied in Australia only)
Suitable for Marine & RV applications.
Quick fit Velcro mounting.
1.4 Mt. sender lead.
Sender leads can not be cut and joined, ext. leads must be used.
1.4 Mt. and 3 Mt. sender extension leads available.






Installing Batteries
Slide the cover off the battery compartment and put in the two AA alkaline batteries supplied.  Slide cover back into place being careful not to catch any wires.

Connecting Sender Unit
Sender unit comes pre-wired with an approximately 1.4m cable.  Extra 1.4m extension leads are available for the three pin plugs, up to 6 leads may be joined to make 9.8m in total length.  Leads cannot be cut and joined, doing so will void warranty, No Exceptions.
The thread specifications of the sender unit are 1/2″ BSP male.   Make sure the sender is fitted with the water flow in the direction of the arrow.
You will need to purchase two 1/2″ BSP female connectors to the size hose you have, usually 1/2″ or 3/4″ and two clamps.  John Guest quick connections also have fittings to suit their hose and the 1/2″ BSP sender unit.
See next section for sender unit mounting positions.

Programming Monitoring Capacity
Press the Display button to turn the display on, press the “PROG” button, “ProG” will blink on the LCD display. Press and release “RESET” button to choose the value of the right digit.  Once the value has been chosen, press “PROG” button to save the value, it will then go to the next digit.  Repeat the above procedure to program the values for the five digits from right to left.  The maximum monitoring capacity is 99,999 litres.  The first time the meter is used fill the water tank and then use normally until empty.  Then note how many usable litres the tank holds and reset the meter accordingly.
*If there is no input for one minute during the programming procedure, the programming procedure will be terminated and goes back to the original status

The TOPARGEE H2Flow will automatically turn on and display the litres remaining when there is water flowing through the sensor e.g. a tap is turned on.  It will automatically turn off 10 seconds after there is no water flowing.  To manually check remaining litres, press and release “Display” button and remaining litres will be displayed for 10 seconds.

End of Capacity Alert
H2Flow will give an audible alert and the digits blink on the LCD display when the remaining capacity reaches zero or minus.

When the water tank has been refilled.
Press the Display button to turn the display on, press the “RESET” button for six seconds, the “rESEt” on the LCD display blinks twice, the unit will then be reset to the originally programmed value.
TIP!  You may find it easier to use the side of your fingernail, coin or pencil etc. to hold the button in for the six seconds.

Low Battery Power Alert
When the battery power is low, there will be an audible alert and the empty battery symbol on the right hand corner of the LCD display blinks.  The alert status will be cancelled when the batteries are replaced by new batteries.  The data of the last status will be memorised and restored.  

To change from litres to gallons or gallons to litres:

Disconnect the power (or batteries)
Press and hold the “PROG” button while reconnecting the power.
Release the button when you hear the long beep.  The display will be switched (from litres to gal, or gal to litres)
Wait until the screen turns off and the unit will memorize the setting.​​​

Note: Due to continuous product improvement, specifications are subject to change without notice.
Included in Box:
Digital Display.
Mounting Velcro.
2x AA Batteries. (Australia only)
RV Inline Sender.


3Mt. Extension leads to suit H2F-FM Topargee water tank guage
Multiple leads can be joined together to make the desired length.




PLEASE make sure you have ALL Postage & Contact details Correct in your Account with Ebay before

placing your order as these are imported automatically within the Postage System. 

Once your order has been dispatched there is nothing we can do if Postal Address is incorrect and No refunds will be given.

To ensure we can dispatch your order the same day (for purchase made before 1pm),

 please complete your payment by following the instructions on Ebay.

 If you need assistance please send us a message through Ebay and one of our team will guide you through the process.

We accept payments through PayPal and Direct Deposit, 

If you don’t have a PayPal account you can still use this option as a guest and pay with your credit card.

 If paying by Direct Deposit please use your Ebay Username as the reference so we can match up your payment. 

If you have any questions please send us a message and our team will be happy to assist.


Shipping and Estimated Time Frames

We send all Orders with Australia Post and a range of Couriers depending on the buyer’s location at our own discretion.  

We also use TNT for all our larger bulky items once again depending on buyer’s location.

Items purchased before 1pm will be sent the same day. 

Unfortunately, we cannot send out on weekends or public holidays, so orders will be sent out the next working business day.

PLEASE NOTE – The delivery time frame estimates displayed are generated by eBay and are sometimes inaccurate.

 Whilst we dispatch daily our courier services use the road network and it can take some

 time for items to be delivered depending on your postal location in relation to the Sunshine Coast.

All orders that have had a tracking number generated through the postage system will be notified through Ebay.




 Return Policy



If you have changed your mind about your purchase or would like to exchange it for a similar product from us, 

a refund might be approved but return shipping fees are to be paid by the buyer and a 20% restocking fee may be charged.

The item MUST BE sent back in its original packaging and condition before a refund will be processed.  

We will need to receive the Item back and inspect it before refunds are processed.

We WILL NOT accept returns if item has been taken out of original packaging. 

We do not cover return shipping fees for change of mind purchases. 

A shipping fee will be deducted from Refund depending on the weight of the item for all change of mind purchases  to cover our original shipping costs.

For an Exchange of item a separate order will need to be processed by the buyer. 

If there are any other issues you have with your order please don’t hesitate to get in touch with us through

 Ebay messages and we will be more than happy to help rectify any problems.



 Please contact us within 30 days if you have a faulty item. 

We will ask for the Faulty Item to be returned for inspection before shipping a replacement.

We will cover all postage costs where item is deemed to be Faulty.

 We do not cover this outside 30 days of purchase. 

If you have received a Damaged Item you MUST contact us within 48hrs so we can organise a replacement to be sent out.

   Please keep your eBay invoice/receipt as after 90 days Ebay deletes them from our records and we are no longer able to print a new one for you.



 We DO NOT Ship Internationally.






To ensure we can dispatch your order the same day (for purchases made before 2:00 PM), please complete your payment by following the checkout instructions.

We accept payments through PayPal and Bank Deposit. If you do not have a PayPal account, you can still use this option as a Guest, and pay with your credit card.

If you are paying by Bank Deposit, please use your full name as the reference so we can match up your payment. Please note that orders will not be fulfilled until we have received your payment into our account, this may take 1-3 business days to clear.

If you require any assistance during checkout or payment, please email us at office@suncoastcaravanservice.com.au, and one of our team will guide you through the process.


To ensure we can get your order to you as promptly as possible, we use a variety of couriers depending on the item/s and your location.Where possible, most orders are sent with Australia Post. This allows items to be sent to all Australian addresses, including PO Boxes. Express Post is available on certain items at an additional cost. If you require Express Post, the cost will be available to you during checkout.

Small items, under 500g, will be sent with Australia Post through the standard mail service.

For items below 5kg, we will endeavour to use Fastway Couriers first if they service your area, as the transit time is faster than Australia Post. Items larger than 5kg will be sent with Australia Post or StarTrack Express, via the road network.

Large, heavy or bulky items will be sent with TNT Couriers. TNT does not accept deliveries to PO Boxes. Some extra large items may incur higher delivery fees to rural areas.

Any orders placed prior to 2:00 PM will be sent the same day. This excludes orders placed over the weekend or on public holidays, these orders will be sent out on the next business day.

All items are sent with Authority to Leave and will be left at a safe place on your nominated premises, if no one is in attendance.


Delivery times can vary depending on the item/s posted and your location. All orders are sent from Sunshine Coast, Queensland.

The delivery time-frames below are estimates only. Delivery may be delayed over the standard delivery estimates at times, due to circumstances beyond our control. We shall not be liable for any loss or damage incurred due to failure of the order (or any part of it) to be delivered promptly or at all.

Standard Mail Service:

  • Major Cities & Metro Areas: 4-7 business days
  • WA Country & NT: 8-10+ business days

Within Queensland:

  • Metro Areas: 1-3 business days
  • Country: 3-5 business days

Outside Queensland:

  • Metro Areas: 3-7 business days
  • Country: 7-10 business days

Express Postage:

  • Within Express Post Network: Next business day
  • Outside Express Post Network: 1-3 business days

Please advise us as soon as possible on (07) 5443 2110, or via email at office@suncoastcaravanservice.com.au if you have supplied us with an incorrect delivery address.

If you order has not yet been dispatched, we will update your delivery address prior to posting. If your order has been dispatched, additional charges may be incurred for the re-delivery to the updated address.


Orders sent with Australia Post Standard Mail Service will not receive a tracking number. If you would like your order tracked, you can select the tracking option at checkout and the additional postage cost will be added to your order.

All other orders will receive an email with the tracking information attached, once the order has been dispatched.

If you believe your order has gone missing in transit:

  • Have you done a Track and Trace? If applicable, we would have supplied you with a tracking number via email.
  • Contact the Courier direct with you tracking number for further information.
  • If you do not hear back from the Courier, contact us on (07) 5443 2110, or via email at office@suncoastcaravanservice.com.au
  • We will lodge an investigation with the Courier.
  • Upon verification by the Courier, if the delivery cannot be located, we will organise for a replacement order to be sent to you.

If you receive your order and believe there are items missing or incorrect, please contact us as soon as possible on (07) 5443 2110, or via email at office@suncoastcaravanservice.com.au within 2 business days, so we can investigate and rectify the missing/incorrect item for you.

If you believe your item has been damaged by the Courier during transit, you must contact us within 24 hours of receiving your order, along with photos of said damage, and we will lodge a case with the Courier. They will not accept liability for any damage outside of this 24 hour window.


We do not deliver to any other countries. We are unable to respond to international emails.


We accept returns on items for a maximum of 14 days after delivery. If 14 days have gone by since your order was delivered, unfortunately we cannot accept a return unless the goods are faulty or damaged.To request a return, you must contact us as soon as possible on (07) 5443 2110, or via email at office@suncoastcaravanservice.com.au. Once your return has been accepted, you will be contacted with the return mail address.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging. If we receive the item back in any condition otherwise, a 20% restocking fee will apply.

Note that items sent back without contacting us prior to sending and us receiving the appropriate return authority, will not be refunded or exchanged. We accept no liability for items returned in those cases.


If you are unhappy with your purchase and would like to return it, the item must be in its original packaging and condition as described above.

We do not cover return shipping for change of mind purchases, and you will be responsible for covering these costs.

Shipping costs are non-refundable. If you receive a refund for your purchase, the cost of the original shipping will be deducted from your refund.


If you believe you have received a product that is damaged, faulty or in any other way defective, you must contact us as soon as possible on (07) 5443 2110, or via email at office@suncoastcaravanservice.com.au.

We will discuss the problem with you and suggest remiedies if possible. Otherwise we will organise a return shipping label for you to return the items, and replace or refund as necessary.

If you believe your item has been damaged by the Courier during transit, you must contact us within 24 hours of receiving your order, along with photos of said damage, and we will lodge a case with the Courier. They will not accept liability for any damage outside of this 24 hour window.


Only regular priced items may be refunded, unfortunately sale items cannot be refunded.


Once your return is received and inspected, we will send you an email to notify you that we have received your returned items. We will also notify you of the approval or rejection of your refund.

If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.


If you haven’t received a refund yet, first check your bank account again.

Then contact your credit card company, it may take some time before your refund is officially posted.

Next contact your bank. There is often some processing time before a refund is posted.

If you have done all of the above and you still have not received your refund yet, please contact us at office@suncoastcaravanservice.com.au.


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