Mopeka Pro Check Universal Sensor - Bluetooth Ultrasonic Sensor For Steel Propane Tanks - Perfect For Propane Grills, Water Tanks & Campers - Water Level Sensor Up To 250 Gallon Tanks

These Mopeka sensors work well and add a new level of convenience to monitoring propane levels. There was a period where this new Universal model was incompatible with the Victron Cerbo GX, but I am happy to report that this situation has been resolved. I can check the levels using the Mopeka app; and they now show up on the Cerbo as well. How far we've come from having to pop open the propane compartment and look at a gauge that may or may not be accurate.A few installation tips:— The process is very easy; however, you will be asked to position the sensor so its position appears inside a little circle that shows in the Mopeka app. I've never seen anyone successfully do this, either in person or in a YouTube video. It seems like the best one can expect is for the position indicator to be touching the little circle. Don't sweat this. Everything will still work. I ended up using a ruler to position the sensor.— My least favorite thing about this product is the fact that there is nothing to hold it in the spot that you've so carefully measured out. The sensor has pretty powerful magnets to hold it to the tank, but once you lube it up with dielectric grease it will slide around on the tank's surface. Annoying. Mopeka does offer a collar that can be stuck on the bottom of your LPG tank with 3M VHB tape to lock the sensor into position. This is what I have done. (The company makes two different collars. Make sure you get the one for LPG tanks.)— These sensors come with three little aluminum spacers designed to clip to the bottom of your tank in order to provide extra clearance. You may or may not need them. I did. These spacers can come loose. I would suggest using an adhesive/sealant to lock them in place. Also, these will definitely scratch up whatever the tank is sitting on.— For those needing spacers but not wanting to scratch up their propane tank compartment, Mopeka offers the "Halo", a plastic ring that goes on the bottom of your tank. These will also need to be attached with an adhesive/sealant if you want them to stay on. Unfortunately, these Halos offer less additional clearance compared to the free aluminum spacers. If you choose to use the collar I mentioned earlier, the Halos probably won't work for you. They didn't for me. Seems like this is something that Mopeka should have been able to anticipate.— Keep in mind that these spacers protect your Pro Check sensor when it's sitting on a flat surface. The teenage kid filling your tank can still set the tank down on an uneven surface or a rock and crush it. And if this kid drags the tank on the ground and knocks off one of the spacers, the sensor could get damaged on a flat surface. Bottom line: pay attention when someone else is handling your LPG tank.I'm tempted to deduct a star due to the incompatibility between the Mopeka Halos and the collars but this is a review of the sensor itself, so I won't. These sensors are game changers. I love them and I recommend these as the best solution for anyone with a propane tank they want to monitor. Five stars.

Great addition to my travel trailer. I have a four season travel trailer. It chews through propane in the winter. I hate running out propane. This allows me to carefully and accurately monitor propane levels. It really sucks to have to change tanks at 3 AM. I just have to remember to remove the unit before I remove it and replace it on the new tank.

We bought these sensors to use in our RV and they are by far one of the best purchases we’ve made. It saves us so much time and energy as we do not need to manually check the propane tanks and helps us to never run out of propane. The readability is reliable and accurate. It is quick to connect with a good fit and a small size. It provides peace of mind as well with its leaks detection capabilities.

The use case for which this was bought is a horizontal 15gal steel petrol tank.Placed on such a tank known to be roughly full, and the sensor quickly read 91%.Placed on another nearly empty tank and it read 36%.I have since filled the second tank with this device applied, and the app showed in real time the tank fill level increasing from 36% up to 96%.I don't need exact volumes for my uses, I just want to know where the level is and top off a tank without being able to see down into it for the visual level.Installation was quick. As others said the directions are too wordy.The graphics in the app and some fields are propane-centric, and it's not clear they mean gasoline by "gas."I was impressed with how well and easily the first unit worked, and I've since purchased two more. One for my second tank, and the other for a family member to monitor their 20lb propane tank.

Easy setup. Just works. Downloaded the app, pushed the sync button—paired. Did that 4 times for 4 sensors. No issues over the last six months of use. Want personalization? You can setup each tank sensor with names, how often it updates, manually specify tank size, and more.I also purchased the Mopeka Gauge display and Bluetooth/WiFi Bridge. I don’t have to use my phone with the Gauge but it’s a simple push/button check. Personally, I find myself using my phone mostly, which is where the Bridge has worked flawlessly for checking remotely (not at home within Bluetooth range). Full-Time RVers: get this system.I had a tank on the ground during freezing/thawing weather. Water got into a sensor and broke it. I ordered one of the newer sensors that does more than just propane. It took me 5 seconds to pair the new sensor and 30 more seconds to name, specify tank size, read timers, and more.Note: I did find that while remotely checking, I would have to, from the Account tab, tap the Location symbol to change it to a Cloud symbol, then immediately change them back, to get a readout. Took all of a few seconds.Note2: Create an account after downloading the app to use the remote capability. Local Bluetooth only use does not require an account.