Product Description Precise Monitoring: Swiss Sensirion sensor ensures 1.8% RH and 0.36F accuracy with 4-second sampling intervals. Data Exporting: View temperature and humidity data from 394ft away. Includes 68 days of on-board storage, 2 years in-app storage, and unlimited cloud storage with SwitchBot Hub. Data exportable as CSV. Compact & Durable: Lightweight, portable design with a lanyard for easy hanging. Long battery life of up to 2 years with minimal battery changes. Smarter Notifications (Hub Required): Supports Dewpoint and VPD readings alongside standard temperature and humidity. With a SwitchBot Hub, receive real-time alerts for preset value changes, ideal for monitoring environments like freezers, wine cellars, and reptile tanks. Product Information and Specs Size: 55 x 55 x 24 mm (2.2 x 2.2 x 0.9 in) Weight: 69g (2.4oz) Warranty SwitchBot Meter comes with a 1-year warranty.