> For the complete documentation index, see [llms.txt](https://docs.rapt.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rapt.io/equipment/rapt-laser-level-sensor.md).

# RAPT Laser Level Sensor

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The **RAPT Laser Level Sensor** gives real time, accurate and up to date data on exactly how much liquid is left in your kegs. 

It can be fitted to any keg with a standard Cornelius style lid.

The **RAPT Laser Level Sensor** can also be adapted to fit any fermenter with a lid mounted 1.5" tri clover port, using the optional KL45063 adaptor
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<figure><img src="/files/S02WCmVgGFYxICo6cClB" alt=""><figcaption></figcaption></figure>
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#### **Super Energy Efficient and Long Battery Life**

Taking measurements every few minutes this level sensor picks up on the liquid level in the keg and sends this information out via BLE (Bluetooth Low Energy).  The 3 x AAA batteries will enable you to use this device continuously for more than 2 years.  Alternatively if you are happy to reduce the measuring frequency to hours rather than minutes then you will be able to get the device to last for years between battery changes or re-charging.

#### **High Accuracy Laser Array**

The integrated laser shoots down a laser array to plot the internals of your tank so it can determine the liquid level quickly and accurately.  This means you get real time data on the level in each tank.

#### **Pre-Set Tanks or Map Your Own Tank**

We have several common vessel types like corny kegs or common fermenter types that are already pre-configured to work with this device right out of the box. With that said you can also use this device and map your own tank shape.  The mapping process is quite simply and you are only required to do it once to map a new vessel shape.  The mapping of the tank allows you to work out at what distance from the sensor is what volume inside the tank

#### **Notifications and Leak Detection**

As this device constantly monitors the level in each keg/tank it can also notify you of a change at any time.  Get notified if someone is drinking your precious IPA when they are not supposed to be for example.  Alternatively use the notifications for leak detection.  Most importantly, notify yourself when you are at the end of the keg so you know when to brew next!

#### **Specifications**

**Battery Type**: 3 x AAA\
**Battery Life**: More than 18 months with level sensing every 5 minutes (significantly longer if level sensing frequency is reduced)\
**Max Pressure of Housing**: 8bar\
**IP Rating**: IP68\
**Wireless Communication**: Bluetooth Low Energy (BLE)\
**Measurement Distance**: Up to 2 metres