Temperature Range: -50C ~ 70CMeasuring Humidity Range: 10% RH ~ 99% RHHumidity Accuracy: 5%Humidity Display Resolution: 1% RHTemperature Accuracy: 1COperating Voltage: 1.5V, or LR44 batteries (Not Included)Sampling Period: 10SDimension: approx. 48 x 28.5 x 15.2mmLCD Dimension: approx. 40 x 22.5mmInstallation dimensions: approx. 46 x 27 x 13.5mmThis hygrometer has a probe, which can test some places humidity exactly. It was used widelyDisplay Type: DIGITALStyle: EmbeddedUsage: Household Type: Button Batterycolor:As shownMaterial:plasticPackage Contents:10 x digital hygrometer thermometer(Black)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.