RAPT Laser Level Sensor | Keg Lid Kit

Take the guesswork out of monitoring your draft beer and brewing setups. The RAPT Laser Level Sensor offers a convenient, highly accurate way to track exact liquid volumes inside your corny kegs, fermenters, and storage tanks in real time.

Key Features & Benefits

High-Accuracy Laser Array

The integrated laser shoots downward into your vessel to map internal dimensions, giving you instant, precise volume measurements. Get real-time data on exact liquid levels without opening the vessel or relying on inconsistent weight sensors.

Pre-Set Vessels & Custom Tank Mapping

Skip the hassle of manual calibration. The RAPT app comes pre-configured for standard corny kegs and popular fermenters right out of the box. Using a custom vessel? The simple, one-time mapping process lets you measure and assign volume parameters for virtually any tank shape.

Super Energy Efficient with Long Battery Life

Powered by 3 x AAA batteries, this sensor transmits real-time level data via Bluetooth Low Energy (BLE). Operating on a 5-minute measurement interval delivers 18+ months of continuous battery life. Decreasing the sampling frequency to hourly extends battery performance for years.

Smart Notifications & Leak Detection

Stay in total control of your inventory. Set up real-time push alerts to catch unwanted pours, detect slow system leaks early, or receive empty-keg reminders so you always know when to schedule your next brew day.

*Note: Push notifications require a RAPT relay device (coming soon).

Rugged, Waterproof Design

Engineered to withstand harsh brewing environments, the sensor housing features an IP68 waterproof rating and handles internal vessel pressures up to 8 bar (116 PSI), making it ideal for pressurized fermentations and damp kegerators.

Versatile Multi-Vessel Compatibility

While designed for Cornelius keg lids, this laser sensor works with almost any liquid or solid storage container up to 2 meters deep:

• Tri-Clamp Mount: Remove the lower housing and attach a 1.5" TC adapter (Part #KL45063) to mount directly onto fermenter top ports. (For TC mounting, purchase the standalone sensor without the keg lid, Part #KL49351).

• Direct Hole Mount: Drill a 40.5–42mm opening in any custom lid or water tank top and thread the housing together for a secure seal.

Technical Specifications