Theory : Temperature SensorMax Measuring Temperature : 50C - 69CDisplay Type : DIGITALCertification : NONEStyle : Standing StationUsage : IndoorModel Number : Mini ThermometerPower Type : Button BatteryDisplay Size : 1.9 Inches & UnderIs Smart Device : NOSpecification:Temperature Range: -50c ~ 70cMeasuring Humidity Range: 10% RH ~ 99% RHHumidity Accuracy: 5%Humidity Display Resolution: 1% RHTemperature Accuracy: 1COperating Voltage: 1.5V, or LR44batteries (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 13.5mmColor: BlackThis hygrometer has a probe, which can test some places humidity exactly. It was used widely