Propane Tank Level Wireless Monitor – Review

Propane Tank Level Wireless Monitor – Review

Propane Tank Level Wireless Monitor (1600px)
Photo of author

Our propane tank being located into a sealed locker (safety first!), it’s not exactly convenient to check the propane level. Fortunately we stumble upon the Mopeka TankCheck Sensor: this neat device allows to monitor the level of propane from our smartphone. Nice!




Before we installed the Propex HS2000 heater we had about 2 months autonomy, but using the Propex heater obviously reduced that to a few weeks. Therefore it became more important to monitor the level more frequently.


What we Like

  • The signal is strong enough to pass through the propane locker (wood is fine, metal is probably not)
  • The sensor works on 20, 30, 40 lbs DOT cylinders and on horizontal RV tanks
  • Multiple sensors (for multiple tanks) is supported
  • Clean and intuitive interface


What we Don’t Like …

  • Nothing to see here!



Models & Where to Buy

There are two options here:

1- Sensor only

If only the sensor is bought, a smartphone is used as monitor. (that’s the option we went for)

Propane Tank Level Sensor Amazon
Sensor only. Buy on Amazon


2- Sensor and Monitor

No smartphone needed with this option.

Sensor and monitor Propane Tank Level
Sensor and Monitor. Buy on Amazon.




1- Install the spacers and the sensor at the bottom of the tank:


  • The sensor holds with magnets
  • The spacers are required to create a gap between the tank and the floor, to ensure the signal pass through.



2- From your smartphone app store, search for “Mopeka Tank Check” and install it.

3-  Open the app and click on “Start Scan”


4- On the sensor, hold the “Sync” button for about 5 seconds. The sensor is now paired to the app!


5- The settings (upper-right end of the screen) allows to

  • Rename each sensor (if you have multiple sensors)
  • Define the tank size for accurate reading
  • Set an alarm threshold
  • Change the display units (Percent, Inches, Centimeters)
  • Unfortunately the Update Rate is not configurable



If you followed the installation instructions above, all you have to do is open the app to check the level!



So we just installed the sensor (January 2018), we will notify you if anything goes wrong! Subscribe to our Mailing List to be notified.




Manufacturer Website Help Section:



Thanks for reading!




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DISCLOSURE: This post contains affiliate links, which means that if you click a product link and buy anything from the merchant (Amazon, eBay, etc), we will receive a commission fee. The price you pay remains the same, affiliate link or not.



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About us



Hello! We’re Isabelle and Antoine 🙂 In 2017, we sold our house (and everything in it), quit our engineering careers, and moved into our self-built campervan. Every day is an opportunity for a new adventure... We’re chasing our dreams, and hopefully it inspires others to do the same!

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Thanks to all of you, we managed to negociate group discount on these. Strength in numbers!

6 thoughts on “Propane Tank Level Wireless Monitor – Review”

  1. This question doesn’t relate to the propane monitor, but instead the vault. I was told that some states don’t allow a propane vault inside the RV. Have you run into this issue? If so, what states? What are your options? Can you just close the tank valve and not use your propane system in those states?

  2. Hello Isabelle et Antoine, I understand your propane tank lives in a seal wooden box to make sure excess possible leak goes out through the little hole you drilled on the floor of the van. Did you have problem with the tank freezing in -20C outside temperature? Would you think a Mopeka Tank Heater-30 lb would be useful since I don’t have a heater in the back of my ‘futur’ van (coming August 2021).
    Thanks for your awesome website. Merci.

  3. Hi, I was wondering how often you would have to replace the battery’s in the Sensors & Monitor? Also, are all the battery’s the same size (CR2032 coin cell-3v)?
    Thank You.

    • We changed the battery (one CR2032) in the sensor after a bit more and 1.5 year. However, how often you connect to the sensor might change the battery life…
      We don’t use the monitor, so can’t tell about it, sorry!


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