# Mopeka TD40

*Mopeka / M2012003*

> The Mopeka TD40 is a top-mount ultrasonic sensor for pressurized and non-pressurized tanks up to 16 feet high that reports over long-range Bluetooth. Home Assistant reads it over Bluetooth through the built-in Mopeka integration. It suits Home Assistant users through an integration (Bluetooth).

- Canonical page: https://smarthomecanon.com/devices/mopeka-td40
- Last checked: 2026-10-20

## Key facts

| Fact | Value |
| --- | --- |
| Brand | [Mopeka](https://smarthomecanon.com/brands/mopeka) |
| Category | Tank level sensor |
| Model numbers | M2012003 |
| Status | Current[^1][^2] |
| Type | Top-mount ultrasonic tank sensor[^2] |
| Tanks | Pressurized and non-pressurized tanks up to 16 ft high[^2] |
| Mount | Top of the tank, through a threaded 2 in port or a 2 in (50.8 mm) hole[^2] |
| Media | Propane, butane, LPG, water, beverages and other liquids[^2] |
| Connection | Long-range Bluetooth[^2] |
| Battery life | 5 years on average, replaceable[^2] |
| App | Mopeka Tank Check or Co-Pilot[^2] |
| Warranty | 3 years[^2] |
| Model number | M2012003[^2] |

## Integration paths

**How the Mopeka TD40 connects**

| Path | Requires | Local | Features lost |
| --- | --- | --- | --- |
| [BLE](https://smarthomecanon.com/protocols/ble) | Mopeka Tank Check or Co-Pilot app on a phone within Bluetooth range[^2] | withheld | unknown |

**Platform support for the Mopeka TD40**

| Path | Platform | Support | Integration |
| --- | --- | --- | --- |
| BLE | [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) | withheld | mopeka |

## Related pages

- [Mopeka tank sensors](https://smarthomecanon.com/lines/mopeka-tank-sensors) (line)
- [Mopeka](https://smarthomecanon.com/brands/mopeka) (brand)
- [Bluetooth Low Energy](https://smarthomecanon.com/protocols/ble) (protocol)
- [Home Assistant](https://smarthomecanon.com/platforms/home-assistant) (platform)

## Sources

[^1]: Mopeka shop. https://mopeka.com/shop/ (manufacturer, checked 2026-10-20)
[^2]: Mopeka TD40 Sensor - BLE. https://mopeka.com/product/mopeka-td40-sensor-ble/ (manufacturer, checked 2026-10-20)