Tuesday, July 29, 2025

How to Integrate the Mopeka Pro Check Sensor with Home Assistant

Mopeka Pro Check Sensor

If you rely on propane tanks at home—for heating, cooking, or powering RV appliances—you’ve likely had the frustrating experience of running out of gas without warning. Enter the Mopeka Pro Check Sensor, a smart, wireless propane tank sensor that gives you real-time tank levels. Even better: you can integrate it with Home Assistant for full home automation and remote monitoring.

In this post, we’ll walk you through what the Mopeka Pro Check Sensor does and how to connect it to Home Assistant, based on the excellent video guide from @SmartHomeJunkie.

What is the Mopeka Pro Check Sensor?

The Mopeka Pro Check Sensor is a Bluetooth-enabled sensor that magnetically attaches to the bottom of your propane tank. It uses ultrasonic technology to measure the liquid propane level inside the tank and sends that data wirelessly to your phone—or, in our case, Home Assistant.

Key Features:

Bluetooth LE (Low Energy)
Magnetic mount (no drilling required)
Works with standard BBQ-size and RV propane tanks
Up to 100 ft Bluetooth range
Long battery life (replaceable CR2032)

What You’ll Need

Before you begin the integration, make sure you have the following:

Mopeka Pro Check Sensor (paired to your tank and functioning)
Bluetooth adapter on your Home Assistant server (e.g., Raspberry Pi 4)
Home Assistant (latest version recommended)
mopeka Bluetooth integration (or bluetooth-proxies if needed)

Extras:

ESP32 Development Board

Step-by-Step: Connecting Mopeka to Home Assistant

1. Install and Pair the Sensor

Install the sensor by sticking it to the bottom of your propane tank. Use the Mopeka Check app (available on iOS/Android) to calibrate and verify that it’s reading data properly. Make sure it’s set to Pro Check, not Standard.

Tip: Update the firmware in the app if prompted before integrating with Home Assistant.

2. Enable Bluetooth on Home Assistant

If you’re using a Home Assistant OS install on something like a Raspberry Pi 4/4 or a system with built-in Bluetooth, make sure Bluetooth is enabled.

If your Home Assistant hardware doesn’t have Bluetooth, use an external Bluetooth dongle or set up a Bluetooth Proxy with an ESPHome device.

3. Add the Mopeka Integration

As of mid-2024, Home Assistant includes built-in support for Mopeka sensors via the Bluetooth integration.

To add it:

Go to Settings > Devices & Services
Click “Add Integration”
Search for Mopeka
Home Assistant should automatically detect your Mopeka Pro Check Sensor if it’s broadcasting nearby via Bluetooth.

Once found, it will create a new device with entities like:

sensor.tank_level (percentage)
sensor.battery_level
sensor.signal_strength

4. Customize and Automate

Once the sensor is added, you can:

Show propane levels on your dashboard using a gauge card
Set up automations like:
- Send a notification when the tank drops below 20%
- Automatically reorder propane when low (via webhook or IFTTT)
- Turn off the outdoor heater when gas runs out

Example automation in YAML:

yaml
alias: Notify Low Propane
trigger:
  - platform: numeric_state
    entity_id: sensor.tank_level
    below: 20
action:
  - service: notify.mobile_app
    data:
      message: "⚠️ Propane tank is below 20%!"

Troubleshooting

If your sensor doesn’t show up:

Ensure it’s not still paired to your phone via the Mopeka app (disconnect it there).
Check that Bluetooth is functioning properly in Home Assistant.
Try placing the sensor closer to your Home Assistant hardware.
Use an ESPHome Bluetooth Proxy for longer range.
Video on how to setup

Final Thoughts

The Mopeka Pro Check Sensor is a simple yet powerful way to monitor your propane levels—without crawling under your tank with a flashlight. When integrated with Home Assistant, it becomes a fully automated part of your smart home.

Whether you’re monitoring fuel levels in your RV, outdoor kitchen, or whole-home propane system, the Mopeka + Home Assistant combo ensures you never run out unexpectedly again.

Watch the full video tutorial here: YouTube: Mopeka + Home Assistant Integration

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