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Know exactly how much fresh water you have left, without relying on float-style guesswork. This Bluetooth Water Tank Gauge uses your phone as the display and shows the remaining water in liters or gallons, giving van owners and other mobile users a simpler way to monitor water usage with more confidence. Designed by Topargee in Australia, this gauge is built for freshwater tank monitoring in vans, RVs, trailers, boats, and off-grid setups. It works with pressurized and gravity-fed systems, installs inline on the water line, and does not require anything to be drilled into the tank. If you prefer to use a mounted LCD screen instead of your phone, see the Flush Mount Water Tank Gauge page.
This gauge tracks water use from the programmed starting amount. After refilling the tank, the gauge must be reset so the stored total matches the amount of water in the tank.
The sender installs inline on the water line and the gauge tracks water use from the programmed tank amount. Your phone displays the remaining water in liters or gallons through the Bluetooth app.
No. The gauge uses Bluetooth, so you can check water levels without an internet connection when you are within communication range.
Yes. After you refill the tank, reset the gauge so the stored total returns to the amount currently in the tank.
Yes, but you need to update the gauge total to match the amount of water currently in the tank so the count remains accurate.
Yes. The app remembers the device, and the gauge stores the settings and totals in the Bluetooth module.
Yes. It can run on 2 AA batteries or with the optional Topargee 12V adapter.
No. Do not wire 12V directly to the gauge. Use the correct 12V adapter.
For best results, install the sender about 200 mm after the pump and away from 90 degree elbows. If space is limited, it can be fitted before the pump.
No. The sender and extension leads should not be cut or joined. Use the proper extension lead if you need more length.
The sender has 1/2 in BSP male threads. Many customers use 1/2 in BSP female to 1/2 in NPT male adapters, or other compatible plumbing fittings that suit their hose and system.
California Proposition 65 Warning: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
We understand that every van setup is unique. That's why we offer CAD-verified roof layouts for customers who have purchased or plan to purchase an Orion roof rack - so you can maximize space and fit exactly what you need, where you need it. Request a layout here ›
We offer free shipping to the lower 48 states on all products. Orders shipping to Alaska, Hawaii, Canada, or international destinations may have additional shipping charges calculated at checkout or quoted separately. Local pickup is also available at our McMinnville, Oregon warehouse by appointment.
Most purchases can be returned within 30 days of purchase if they are in new, resalable condition with original packaging. A 20% restocking fee applies; return shipping is the customer’s responsibility, and some items are final sale or not eligible for return. For full details, please see our Shipping Policy and Return Policy.
Orion Van Gear offered the best pricing on my two new MaxxAir MaxxFan Deluxe fans and they arrive SO fast. The install on our our 5th wheel went exceptionally well. Thank you for the great experiences.
Purchased a Stealth+ Roof Rack for my Ram Promaster Low Roof (one of the few options available for the Low Roof Promaster) along with a few other items. We are very pleased with the engineering, fitment and appearance of the rack. We hit a couple of install bumps along the way but were blown away by the rapid response of the Orion Team anytime we reached out to them. We will definitely be working with them again as our van build progresses.
The Orion roof rack I got from Orion for my transit mid roof 148 was a piece of cake to install. I was delighted with how easily it went together! My older son was unable to help that day but even so I got it done in about 4.5 hours. The Instructions are clear, the materials are all clearly labeled. There was no grinding, or tweaking of any kind needed! Can’t wait to get the roof panels!
Pictures look great!
22 day delivery time. I guess it happens often with USPS going thru L.A. Update. Issues with this order and delivery have been resolved. Thanks for the quick response.
I mounted the lights and I was very pleased.
