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Shop Orion Van Gear best sellers, trusted by van builders and van...
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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 screen instead of your phone, see our 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.
Best price, fast delivery
They work pretty good maybe put the long slot on both sides.
This was a great purchase! I was initially worried about the cost, but this roof rack met all my needs and is worth the price. I purchased this rack for my sprinter 144. Service support was amazing and developed multiple CAD renderings so I would be assured that my solar panel, roof vent, and starlink would all fit on my roof. Once ordered, the rack came extremely well packaged and with detailed instructions. I installed it by myself and could not be more pleased. I'm just an overage Joe and was really happy with the outcome!
Thanks so much, really appreciate you taking the time to share this. Glad the CAD layouts helped dial everything in and that the install went smoothly. Enjoy the rack and the adventures ahead.
Little difficult but works great
