RV Tank Monitoring Simplified

Garnet - SeeLevel II - Tank Monitor

To make keeping an eye on tank levels easier than ever, Garnet Instruments Limited has announced its new 709-BTP3 RV tank monitor.

This new gauge features Bluetooth wireless technology, which allows owners to check their motorhome’s tank levels via their smartphone or tablet thanks to a free downloadable app available on the App store and Google Play. The 709-BTP3 gauge monitors battery voltage, freshwater and holding tanks, and connects to the LP-gas sensor, plus it includes a water pump switch. The 709-BTP3 is accurate to 3⁄8 of an inch, according to the company, and only requires two wires to connect the sensors to the display. The sensors adhere externally to the holding tanks, so there is no impact from sewage buildup on the sensors, resulting in a more accurate reading. The sensors are designed to be shortened with the option to stack two sensors for larger tanks. MSRP: $449.

Garnet Instruments | 800-617-7384 | www.rvgauge.com



  1. We installed this on our 2017 Tiffin Phaeton 44 OH. I am very pleased with the unit. I had planned to buy one (not the BlueTooth version) so we would have a more accurate reading on our tank levels. After seeing the BlueTooth version at the FMCA rally in Indianapolis I bought it. We rally like having the app on our phone so we can check on tank levels from in and around the motorhome. The app works so well I left the fixed display in the wet bay rather than bothering to mount it near our main spider panel.

    I am using the iPhone app on three family iPhones, very pleased with the system.

    Jim Fassino


Please enter your comment!
Please enter your name here