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RAPT Pill Hydrometer & Thermometer – Yellow (includes 18650 battery)

Original price was: $69.00.Current price is: $61.00. Inc GST


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rapt pill standing upright
RAPT Pill Hydrometer & Thermometer - Yellow (includes 18650 battery) $69.00 Original price was: $69.00.$61.00Current price is: $61.00. Inc GST

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The RAPT Pill Hydrometer & Thermometer offers precise, real-time monitoring of specific gravity and temperature during the fermentation process, connecting via WiFi or Bluetooth for seamless data logging and control. Its durable, sanitary design and long battery life make it a reliable tool for brewers seeking accurate fermentation tracking.

The RAPT Pill Hydrometer & Thermometer is an innovative brewing tool designed to offer brewers unparalleled accuracy and control over their fermentation process. Featuring WiFi and Bluetooth connectivity, this device allows for true real-time logging of specific gravity and temperature, directly from the fermenter. Its robust design, including a durable, sanitary housing made from BPA-free Nylon 12 and Polyketone, ensures both reliability and ease of use, making it less susceptible to errors caused by fermentation by-products like krausen, hops, or CO2 bubbles.

One of the RAPT Pill’s standout features is its long battery life, capable of lasting up to 1.5 years with default settings, thanks to efficient power use and a convenient USB-C charging port for quick recharging. Additionally, the device is designed for better ergonomics, splitting into two pieces for easy handling, and features a double o-ring seal to prevent infection risk.

With the ability to seamlessly integrate with the RAPT ecosystem, including the fermentation chamber and mobile app, the RAPT Pill offers brewers a set-and-forget experience, allowing for complex temperature profiles and remote monitoring. This level of control and precision makes the RAPT Pill a must-have for serious homebrewers and professionals alike, aiming to perfect their craft with the latest in brewing technology.


*Accuracy: +/- 0.002 SG points
Temperature Range: -20C(-4F) and up to 60C(140F)
Pressure: 0-5bar
Battery: Li-Ion 18650 (we use the EVE Brand)
Size: 37mm Diameter x 125mm Long

Temperature Accuracy: +/- 0.2C (0.36F)
*Accuracy will be effected if solids are stuck to the outside of the pill hydrometer.  If you shake the fermenter from time to time this generally helps to wash hops and solid chunks of krausen off the body of the Pill and through the fermentation these will generally drop to the bottom of the fermenter.

User Guide

Download the user guide here.

Additional information

Weight 0.2 kg


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