• User-replaceable battery
• Waterproof to 120 meters (400 feet)
• Large memory stores 96,000 measurements
• Water detection feature conserves battery life
• Works with Onset’s free HOBOmobile app
• +/- 0.2-deg C (+/- 0.36-deg F) accuracy
• Waterproof boot protects the logger during deployment
• LED alarm notifies you when temperature exceeds set threshold
• Convenient wireless setup and download via Bluetooth Low Energy (BLE)

A waterproof temperature logger that uses the power of Bluetooth to deliver high-accuracy data straight to your mobile device or Windows computer running Onset's free HOBOconnect app. Designed for durability, this rugged is ideal for long-term deployments in streams, lakes, and oceans (up to 400-foot depths). Also includes a feature to detect and record the presence of water, which is ideal for monitoring intermittent water applications. Data collection in the field has never been easier!