Float Pro wireless digital hydrometer
Real-time fermentation monitoring without opening your fermenter
Real‑time gravity and temperature, straight to your phone. No more opening your fermenter to take samples.
€ 129,95Add to cart
In stock · ships in 3–5 days across Europe
€ 129,95Add to cart
- ↩︎30‑day money‑back guarantee
- 🛡️2‑year warranty
- 💾Store measurements without Wi-Fi
- 🇳🇱Designed & made in the Netherlands
- Continuous gravity and temperature measurements
- Fermentation curve
- Know exactly when fermentation is finished
- Dry hop based on fermentation progression
Free My Brewbrain account included. Links with Brewfather and Grainfather.
Start tracking your brews: order Float Pro now
Features
Track your fermentation activity, temperature and SG and more.
Wi-Fi connected. Measure everywhere
Track fermentation activity and temperature
Follow sugar to alcohol transformation
Pressure-rated to 2 bar
Charge wireless or USB-C
Multi-color LED for identification and status info
Technical specifications
| Application | Fermentation monitoring of beer, wine, cider, mead etc. |
| What's in the package | |
| Float Pro | With rechargeable battery, pre-installed |
| Charger | (Wireless) charger and cable not included |
| Dimensions | 183 x Ø41 mm (7.2 x Ø 1.6") |
| Weight (exluding packaging) | 165 g (5.8 oz) |
| EAN | 8 720844 085187 |
| Temperature range | +2 °C to +60 °C (+36 °F to +140 °F) |
| Pressure range | +2 bar or 3 barg (+29 PSI or 43 PSIg) |
| Charging | |
| Wireless power | QI v1.2 compliant chargers (check our charging pad guide) |
| USB-C | Use 5V chargers, min 1A output |
| Battery | 4 months on full charge |
| Wi-Fi connectivity | |
| Standard | Wi-Fi 802.11 b/g/n - 2.4 GHz only (recommended Wi-Fi settings) |
| Security | WPA, WPA2 Personal |
| Encryption | WEP, TKIP, AES |
| Measurement logging | |
| Data sent via | Wi-Fi (Bluetooth: in development) |
| My Brewbrain platform | Measurements logged every 15 mins, free account |
| Local / custom | We are exploring options, we value your input |
| Specific gravity | |
| Range | 0.970 to 1.150 SG (-8 to 34.3 °Br/°P) |
| Accuracy | ±0.006 SG (≈ ±1.5 to ±2.5 °Br/°P ) |
| Resolution | 0.001 SG (≈ ±0.25 to ±0.40 °Br/°P ) |
| Measurement units | Brix, Plato, Oechsle, Baumé, KMW/Babo |
| Temperature | |
| Range | 0 to +60 °C (32 to 140 °F) |
| Accuracy | ±0.25 °C (±0.45 °F) |
| Resolution | ±0.0625 °C (±0.45 °F) |
| Measurement units | °F, K |
| General | |
| Food safety | All outer materials are food-safe |
| Recylability | All materials are recyclable, please dispose of correctly🖤 |
| Ingress protection | Waterproof according to IP67 |
| Housing, lid | PET |
| Sealing ring | TPU, with silicone lubricant |
| Cleaning | Conventional brew cleaning agents, FAQ for full list |
Why Brewbrain
- Built by brewers, for brewers
- Designed and produced in The Netherlands
- Thousands of brews tracked on our free platform
See what brewers and reviewers say about the Float Pro:
How does the Float Pro compare to other hydrometers?
| Feature | Float Pro | Typical alternatives | Explanation |
|---|---|---|---|
| Calibration | Factory calibrated | Manual calibration | Start brewing straight out of the box. |
| Charging | Wireless and USB-C | Cable or battery replacement | No opening the device, no extra waste. |
| Status feedback | RGB LED | None or limited | See status without opening an app. |
| Colour | Software-adjustable | Fixed | Tell multiple floats apart. |
| Pressure fermentation | Designed for it | Limited tolerance | Safe in pressurized fermenters. |
| Cleaning | Seamless body | Jagged edges | Easier to clean and sanitise. |
What fellow brewers say
Frequently asked questions
Can Float Pro wireless digital hydrometer be used for fermenting under pressure
Yes. The Brewbrain Float Pro is designed with a high-quality housing and customized seal. This ensures a watertight housing even when fermenting under pressure, making it suitable for modern brewing setups.
The Float Pro operates reliably during pressure fermentation up to +2 bar, while continuing to measure and transmit fermentation data such as gravity and temperature.
Does Float Pro integrate with Brewfather?
Yes. The Brewbrain Float Pro can connect to Brewfather through the My Brewbrain platform.
The Float Pro automatically sends fermentation data—such as gravity and temperature—to the My Brewbrain platform, which can then share this data directly with Brewfather. This allows you to monitor your fermentation progress inside your Brewfather brewing dashboard.
In addition to Brewfather, the Float Pro also integrates with other brewing platforms, including Grainfather and several third-party brewing tools.
All integrations are available free of charge, so you can connect your Float Pro to your preferred brewing software without any additional subscription fees.
Will Float Pro work in stainless steel fermenters?
Yes, Float Pro can send measurements even when used in a stainless steel fermenter inside a fridge.
How accurate is Float Pro?
The Brewbrain Float Pro measures specific gravity with an accuracy of ±0.006 SG.
While this level of accuracy is suitable for fermentation monitoring, the real strength of the Float Pro is the continuous measurements it takes throughout fermentation. With a traditional hydrometer you take a few manual readings, but the Float Pro automatically records far more measurements over time.
With continuous measurements, a clear fermentation curve is plotted, that allows brewers to see relative changes in gravity, which is useful for:
-
Tracking fermentation progress
-
Determining when fermentation has finished
-
Detecting issues such as yeast not starting or a stalled fermentation
Does Float Pro support different measurement units?
Yes. Float Pro supports the following units:
- Gravity:
- SG
- Plato (°P)
- Brix (°Brix)
- Oechsle (°Oe)
- Baumé (Be°)
- Klosterneuburger Mostwaage (KMW/Babo)
- Temperature:
- Celcius (°C)
- Fahrenheit (°F)
- Kelvin (K)
You can set the units in the My Brewbrain Platform.