Key Performance Features

• Ultrasonic Sonar Technology: Reads the liquid level from the bottom of the tank through the steel wall—no drilling or invasive plumbing required.

• Bluetooth Connectivity: Transmits level data directly to your smartphone via the free Mopeka Tank Check app or a Mopeka LCD dash display (sold separately).

• Enhanced Battery Life: Powered by a replaceable CR2032 battery that lasts approximately 2–3 years under normal usage.

• Magnetic Mounting: Powerful rare-earth magnets hold the sensor securely to the bottom of the tank, even while traveling on bumpy roads.

• Victron Compatible: Can be integrated into Victron Energy GX devices (like the Cerbo GX), allowing you to monitor your propane alongside your solar and battery systems.

• Intrinsically Safe: Certified (Class 1, Div 2) for use in hazardous environments around flammable gases.

Technical Specifications

In The Box

• 1 x Mopeka Pro Check Sensor (LPG version)

• 1 x Packet of Sonic Grease: Essential for creating a "seal" between the sensor and the tank to ensure sonar waves travel clearly.

• 3 x Tank Spacers: These clip onto the bottom rim of your 20lb, 30lb, or 40lb cylinder to provide the necessary clearance so the sensor doesn't get crushed against the ground or tank tray.

Installation Pro-Tips

• Surface Prep: Before applying the grease, clean the bottom center of your tank with a rag. If the tank has thick, peeling paint or rust, a light sanding may be required for the sonar to get a clean "read."

• The "Pea-Sized" Dab: You only need a small amount of the sonic grease. Apply it to the center of the sensor before snapping it onto the tank.

• Spacers are Mandatory: If your tank sits on its bottom rim (like a standard BBQ or RV cylinder), you must use the included spacers. Without them, the tank's weight will rest on the sensor, likely damaging it.

• Sleep Mode: New sensors arrive in a "sleep" mode to save battery. To wake it up, press the Sync button on the sensor five times rapidly before attempting to pair it with the app.