TILT Pro Wireless Hydrometer and Thermometer - Black The TILT Pro wireless hydrometer and thermometer is built for craft-scale stainless fermentation tanks and serious homebrewers who need stronger Bluetooth range, steadier gravity readings, and higher measurement resolution than the standard Tilt hydrometer. The larger Pro body is roughly 3x the volume and weight of the original Tilt, allowing increased power for better range through stainless steel walls and thick krausen. It reports specific gravity and temperature to your compatible phone, tablet, or Raspberry Pi so you can monitor fermentation activity without repeatedly pulling samples. Key Features Wireless specific gravity and temperature tracking during fermentation Improved Bluetooth range for stainless fermenters and larger tanks Specific gravity resolution to 0.0001 Temperature resolution to 0.1°F / 0.1°C Compatible with the free Tilt app for Apple and Android devices Specifications Size: 1.7" / 43 mm diameter max x 5.4" / 140 mm tall Weight: 5.4 oz / 153 g Specific gravity range: 0.9900–1.1200 Temperature range: 0°F–140°F / -17.8°C–60°C Absolute maximum temperature range: -40°F–185°F / -40°C–85°C Battery: User-replaceable 2 x 1.5V AA lithium batteries, Li/FeS2 type Use only the recommended lithium AA battery type. Alkaline or heavy-duty batteries are too heavy and can cause the Tilt Pro to sink.