Features: Type: Digital Thermometer Hygrometer Screen: LCD Display Cable Length: 1.5m / 4.9ft Battery: 2 LR44 Button Cells (included) Temperature Measurement Range: -50-70 ℃ Humidity Measurement Range: 10%-99% Humidity Measurement Accuracy: +/-5% Humidity Sampling Period: 10 Seconds Read more Temperature Measuring Range: -50-70 ℃ ; Humidity Measuring Range: 10%-99%RH (Measures Conditions Every 10 Seconds) Temperature Measurement Accuracy: ±1℃; Humidity Measurement Accuracy: ±5%RH The Digital Humidity Thermometer Not Only Allows You to Understand the Temperature and Humidity Around you Easily, But Also Helps You to Monitor your Family's Living Conditions and Health to Prevent Colds, Dry Skin This Mini Temperature and Humidity Monitor is Powered by LR44 Battery (included) that Provides 18-24 Months of Battery Life and It’s Very Easily Replaceable. Read more Package Contents: 2x Mini Digital Hygrometer Thermometer Gauge with Probe