RV Propane Tank Monitoring
How to Monitor Your RV Propane Tanks with the Mopeka Pro Sensor – From App to Full Automation
Have you ever run out of propane in the middle of cooking dinner or heating your RV? If so, you know it’s a frustrating (and sometimes expensive) problem.
Most RVs give you no accurate way to tell how much propane is left in your tanks, especially if you’re running dual 30 lb cylinders. That’s where the Mopeka Pro Sensor comes in. This is one of the easiest ways to start your RV automation and solve one of our most frustrating issues.
In this guide, I’ll show you:
- How the Mopeka Pro works
- How to start with just the sensor + phone app for quick results
- How you can later integrate it into Home Assistant for full RV automation
What is the Mopeka Pro Sensor?
The Mopeka Pro is an ultrasonic propane level sensor that mounts to the bottom of your tank. It sends out a sound pulse and measures how long it takes to bounce back, letting it calculate the level of liquid propane inside.
- Works with 20 lb, 30 lb, and 40 lb steel tanks (and aluminum tanks with an optional magnetic ring).
- Connects via Bluetooth to your smartphone or an optional remote display.
- Battery-powered (user-replaceable CR2032 or rechargeable version available).
💡 Why it’s excellent for RVers: No drilling, no wiring — stick it on and go.
Getting Started – The Simple Setup
Here’s the beauty of the Mopeka Pro: you can start small.
What you need:
- Mopeka Pro Check Sensor (one per tank) – Affiliate link
- Mopeka Tank Check App (free on iOS & Android) – App store link
Step-by-step:
- Clean the bottom of your tank – Use a damp cloth to remove dirt and rust so the magnetic mount sticks well.
- Attach the sensor – Center it on the bottom of the tank using the built-in magnets.
- Open the app – Pair the sensor via Bluetooth.
- Set your tank size – In the app, choose 20 lb, 30 lb, or 40 lb.
- Check your levels – The app shows a percentage fill and estimated gallons remaining.
With just this setup, you can check your propane level from inside your RV — no need to go outside in the cold or rain.
Adding the Remote Display (Optional)
If you’re looking for a quick solution, Mopeka offers a compact remote display unit that can read multiple sensors and mount inside your RV.
- Perfect if your phone is charging or you just want instant readings.
- Uses Bluetooth to pull data from the sensors.
Next Level – Integrating with Home Assistant
This is where things get exciting for RV automation.
With Home Assistant, you can integrate the Mopeka Pro into your central RV control dashboard and even automate alerts.
What you’ll need:
- Mopeka Pro sensor(s) (affiliate link)
- Raspberry Pi or mini PC running Home Assistant
- Bluetooth adapter (if not built in)
- Home Assistant Mopeka integration or Bluetooth sensor add-on
Example automations you can create:
- Low Tank Alert: Send a push notification to your phone when propane drops below 25%.
- Visual Alerts: Flash your RV’s LED lights when a tank is low.
- Central Dashboard: See propane, water tank levels, battery status, and temperature all in one place.
Pros & Cons of the Mopeka Pro
Pros:
- Easy install — no modifications to the tank.
- Accurate and consistent readings.
- Expandable — start with just the app, upgrade to full automation later.
Cons:
- Needs Bluetooth range (about 30–50 ft).
- Battery replacement every 1–2 years.
- Requires a clean tank bottom for best performance.
Final Thoughts
The Mopeka Pro is one of the easiest, most affordable ways to bring real automation to your RV, starting with something as simple (and valuable) as knowing exactly how much propane you have left.
You can start today with just the sensor and app for under $50 per tank, then grow into full smart RV integration when you’re ready.
💡 Get Started Now – Order your Mopeka Pro Sensor here (affiliate link) and never be surprised by an empty tank again.
