1. Introduction and Overview
The Mopeka Pro Check Universal Sensor is an advanced Bluetooth ultrasonic device engineered for precise and real-time monitoring of liquid levels in various tank types, including aluminum, plastic, and poly tanks. This sensor offers enhanced accuracy, reaching up to 99.5%, ensuring reliable data for a wide range of applications.
Beyond propane, the Pro Check Universal Sensor is versatile, supporting tanks that hold diesel, oil, water, butane, anhydrous, and other liquid commodities. Its robust design ensures durability for outdoor use, making it suitable for home, RV, BBQ grills, and outdoor heaters.

Key features include a significantly longer-lasting battery (up to five years, replaceable), integrated temperature sensing, a tank "bubble level" indicator, configurable sample timing, and customizable alarms/alerts. It seamlessly integrates with the free Mopeka Co-Pilot mobile app, available on Apple and Google Play stores, providing unlimited tank and sensor support.
2. What's in the Box
- Mopeka Pro Check Water sensor
- Ultrasonic grease packet
3. Key Features
- Enhanced Accuracy: Monitors tank levels with 99.5% accuracy.
- Multi-Commodity Support: Compatible with water, propane, diesel, oil, butane, anhydrous, and other liquid commodities.
- Long-Lasting Battery: Up to five years of battery life, with a replaceable battery.
- Effortless Installation: Attaches easily to the underside of your tank using a mounting collar.
- Cutting-Edge Technology: Includes integrated temperature sensing, a tank "bubble level" indicator, configurable sample timing, and firmware update capabilities.
- Customizable Alarms: Set personalized alarms and alerts via the mobile app.
- Free Mobile App: Access real-time data and manage multiple sensors with the Mopeka Co-Pilot app (iOS and Android).


4. Setup and Installation
The Mopeka Pro Check Universal Sensor is designed for quick and easy installation. It attaches to the underside of your tank using a mounting collar, ensuring a secure fit even in challenging environments.
- Prepare the Tank Surface: Ensure the bottom surface of your tank where the sensor will be mounted is clean and free of debris.
- Apply Ultrasonic Grease: Apply a small amount of the provided ultrasonic grease to the center of the sensor's contact surface. This grease is crucial for optimal signal transmission.
- Attach the Mounting Collar: Secure the mounting collar to the underside of your tank. For non-magnetized surfaces, the collar provides a stable base.
- Position the Sensor: Place the sensor firmly into the mounting collar, ensuring it makes good contact with the tank surface. The sensor should be flat against the tank bottom for accurate readings.
- Download the App: Download the free Mopeka Co-Pilot app from the Apple App Store or Google Play Store.
- Pair the Sensor: Open the app and follow the on-screen instructions to pair your sensor via Bluetooth.
- Configure Tank Settings: Within the app, configure the tank type, size, and commodity (e.g., water, propane) for accurate level calculations.

Watch this video for an overview of the Mopeka Universal Pro Check, including its features and how it connects to your smart device.
5. Operation
Once installed and paired, the Mopeka Pro Check Universal Sensor provides real-time tank level data directly to your smartphone via the Mopeka Co-Pilot app.
- Monitoring Levels: Open the Mopeka Co-Pilot app. The app will display the current level of your tank(s) in percentage, along with other relevant information like temperature and signal quality.
- Customizing Settings: Within the app's settings, you can rename your device, select your tank region, specify tank size (e.g., 120 gal, Vertical), and choose the commodity being monitored.
- Adjusting Update Rate: The sensor's update rate can be configured in the app to balance real-time data with battery life. A faster update rate provides more frequent readings but consumes more battery.
- Setting Alarms: Utilize the alarm threshold feature to receive notifications when your tank level drops below a certain percentage, ensuring you are always aware of critical levels.

This video demonstrates the Mopeka app interface, showing how to check tank levels, sensor position, and adjust settings like update rate.
6. Maintenance
The Mopeka Pro Check Universal Sensor requires minimal maintenance. The battery is designed for long life and is replaceable when needed. Periodically check the sensor's contact with the tank and reapply ultrasonic grease if necessary to ensure optimal performance.
To replace the battery, carefully open the sensor unit and insert a new battery of the specified type. Refer to the product packaging or the Mopeka Co-Pilot app for specific battery requirements.
7. Troubleshooting
If you encounter issues with your Mopeka Pro Check Universal Sensor, consider the following troubleshooting steps:
- No Reading or Inaccurate Readings:
- Ensure the sensor is firmly attached to the tank bottom and is flat. Use the in-app leveling tool under "Sensor Position" to verify correct horizontal placement.
- Verify that ultrasonic grease has been applied correctly and is sufficient. Reapply if it appears dry or insufficient.
- Check the battery level in the app. Replace the battery if it is low.
- Ensure the tank surface is clean and free of obstructions where the sensor is mounted.
- Bluetooth Connection Issues:
- Ensure Bluetooth is enabled on your smart device.
- Move closer to the sensor to improve signal strength.
- Restart the Mopeka Co-Pilot app.
- If the issue persists, try restarting your smart device.
- App Not Updating:
- Check your sensor's update rate settings in the app. A longer update interval means less frequent readings.
- Ensure your app is updated to the latest version.
8. Specifications
| Attribute | Detail |
|---|---|
| Manufacturer | Mopeka |
| Brand | Mopeka |
| Model | Pro Check |
| Item Weight | 2.82 ounces |
| Package Dimensions | 5.79 x 5.75 x 0.67 inches |
| Country of Origin | China |
| Item Model Number | M1017020A |
| ASIN | B0C7HM61BP |
| Date First Available | June 8, 2023 |

9. Warranty Information
The Mopeka Pro Check Universal Sensor comes with a 1-year warranty from the date of purchase. Please retain your proof of purchase for any warranty claims.
10. Customer Support
For further assistance, technical support, or inquiries, please visit the official Mopeka Store:





