Mopeka Pro Check Universal Sensor - Bluetooth Ultrasonic Sensor for Steel Propane Tanks - Perfect for Propane Grills, Water Tanks & Campers - Water Level SensorUp 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.

This was easy to set-up using the app and has good range using Bluetooth. I tried it on 3 different 20lb cylinders of known quantity of LPG and it read them all accurately. It sticks to the bottom fairly well, but they are rounded so it takes a few seconds to center the sensor. For my use they adhere well enough. I would not be so liberal with the grease, it only needs a dab on the sensor. This should help with movement once centered. As for replacement Mopeka grease you can buy some here on Amazon, or any silicone dielectric grease works perfect. It is the same. I am overall very pleased with this device. It is not cheap, but it's accurate and does the job well. I wasted a lot of money on inaccurate inline gauges and a scale device. The scale does work, but requires disconnection and lifting of the cylinder, and can't give you a real-time reading. Now I know at a glance where I stand gas wise.

One of my original tombstone shaped sensors finally died during our winter trip. I went online to order a replacment and found these newer sensors. So far the difference is night and day. They appear to read more quickly, are much more reliable, and require less energy than the older ones. Very happy with the purchase.

I would give this product 5 stars but for an annoying application. The devices are accurate. Remote access from somewhere miles away works. But the application requires Bluetooth to be turned in the on position on the cell phone to stop the annoying pop up message "allow Mopeka to turn on Bluetooth", when miles away using the cloud access via the WiFi Bridge in the RV. Bluetooth does not need to be on though, and just cancelling the pop up notification and one more time another notification will allow viewing the cloud data. Another annoying set up and local access (when in or near the RV) is that the phones Location Services must be turned on to use the Bluetooth interface to change settings and check the position accuracy of the Mopeka every time I change out the propane tanks. I always have Location Services turned off on my cell phone. But for these annoying factors, the product works great and is reliable.

This is an awesome product. I installed the sensor as soon as I got it. Easy to install and download the app. I ended up buying the bottom ring extender just to make sure I wouldn’t smash the sensor. I would recommend.

The principle behind the sensors function is simple. Or, at least it should be if the sensor is thoughtfully designed. I have two 100# (25 gallon) tanks feeding multiple devices on my property. Tanks are mounted in an enclosure with a level base made of concrete pavers. A nice level, unchanging surface. The tanks only move when they need to be serviced or filled. Should be an ideal setup. Like most all propane tanks, the bottom of the tanks are rounded. There is no support ring - instead, the tanks sit on wheels and a metal support when vertical. The tanks CAN be used horizontally, but we don't. There is abundant clearance for the sensor. Due to the typical rounded tank, the sensor does not sit perfectly flat. A thoughtful design could fix that (3 magnets with some protrusion, for example), but that little detail was lost on whomever designed this product. Like some others have commented, we found one sensor seemed to work, at least at first. When a second sensor was activated on the adjacent tank, it went tilt. Two tanks, both newly filled today: One reads full (most of the time) and the other read 32% full when the tank was empty, then totally empty once it was completely full. Huh?! 9 hours dealing with this, I contacted Mopeka Customer Service. The email response said, among other irrelevant things, that they "need to hire more sales and support staff." I don't want to hear excuses why they can't support their product, or won't. Returning the product. It just does not work as advertised, nor is it properly designed to do so.

I am impressed with how well these things work. Far better than a pressure gauge. Even if they are only five percent accurate, they are worlds better than pressure. The setup is easy except for having to press the button to start syncing and trying to get it leveled according to the app. It takes a few tries. I was pleasantly surprised to see that these automatically connected to my Victron Cerbo GX, so I don’t even have to use the app.

Mounted on two RV 30lb propane tanks. They work great and give peace of mind about your propane levels when camping.

This is a small but very useful bit of kit. Isn't it everyone's nightmare guessing how much gas you have left. Not anymore once set up on your bottle it links to your phone via Bluetooth and tells you the exact percentage left. Has made a trips alot less stressful.

Unless you have serious age or handicap issues, this product for an RV is just a very nice gadget. The propane tanks on almost all RVs will do quite nicely with a much cheaper gauge installed where your propane hose connects to the tank. For a home or condo installation where the primary use is in winter for a fireplace or heating, it's quite another story.. When the cold and the snow piles up and your tank is accessible enough for deliveries but really inconvenient for regular monitoring of the fuel level . This unit can make your life dramatically easier..Here in Quebec there are thousands of tanks against the outside walls of homes and multistory condos. While the tanks need to be accessible enough for deliveries, most are a significant inconvenience to read the in-tank gauge on a regular basis. Being able to read the tank level from inside in winter weather is worth double the price of these units. HOWEVER, they have a major drawback. Battery life. Yes they have greatly improved it since I bought my first one, but cold weather kills even the best battery . You'll be very lucky if the 3vdc CR2032 battery in the unit makes it through the winter. (I went through a number of winter failures.) There is a solution which Mopeka has refused to adopt. I soldered a two wire line (AWG20) to the battery terminals, ran the wire out the unit vent hole, through my house wall and inside where I attached two 1.5v batteries in series in a holder (3vdc). The indoor battery pack is in parallel with the 2032 battery in the unit. . This keeps the unit running for years even in -40 temps . If the batteries ever do fail, it is a piece of cake to replace them INSIDE, without diving under the snow in freezing weather. With this arrangement I consider this product indispensable. I even bought a spare just in case, although my present unit has lasted many winters already. If you would like to do a similar setup. Popping the cover off to replace the battery is simple, a small flat screwdriver in the slots will do the trick but be careful soldering the wires to the battery terminals. Remove the battery first. It will act as a heat sink requiring more solder heat and possibly damaging the unit. Also it could explode when applying the solder heat. Before attempting the solder joint, make sure your soldering iron is at full heat and will instantly melt the solder when applied to the wire and contacts. The heat should be for only for five or so seconds or you can damage the circuitry. Good luck and let your cell phone check your tank in the next blizzard.

Funktioniert auch mit Victron Panel. Super zufrieden

Realmente es muy fácil de instalar. Instalé el sensor en un tanque horizontal de 110L ubicado en una azotea en una casa de dos niveles. Solo hay que tener cuidado de centrar el sensor en la parte baja del tanque, el nivelador de la app es muy útil para que quede bien. Seleccioné el tipo de cilindro "120L Horizontal" para que el sensor funcionara y calculara correctamente el volumen del tanque (-2L Error, respecto al volumen real). El estar expuesto a la intemperie a no ha modificado el funcionamiento del sensor. La intensidad de la señal es buena, 3 de 4 rayas de la intensidad de la señal, leyendo desde planta baja. El único inconveniente es que la app tarda en sincronizarse con el sensor cada vez que reviso el nivel en mi celular, es probable que sea mi celular el chafa y el origen del retraso, pero en la tablet es más rápido.

These Mopeka sensors work beautifully on the 20 lb tanks on my RV. I initially only purchased one, but after using it I got a second one for the other tank. Installation is simple. They are held in place with magnets. You just have to apply the provided gel to the sensor. The app assists you with level placement of the sensor. I also purchased rubber rings for the base of each tank so I can't comment on the provided metal spacers. I didn't use them. Bluetooth range is very good with the rings installed - 30ish feet. If you're installing two sensors, name your tanks and your Mopeka sensors so you can keep track of them at refill time.