1、Using high‑accuracy digital temperature and humidity sensor, high accuracy, fast speed and good stability. 2、It is suitable for data collection and monitoring of ambient temperature and humidity for indoor and outdoor temperature measurement. 3、Equipped with a backlit LCD screen and small size, which is easy to use and can be used in dark environments. 4、With maximum and minimum functions. The temperature resolution is 0.1°C/0.2°F. 5、It is widely used in temperature and humidity measurement in industry, agriculture, meteorology, medical treatment and daily life. 1 x Thermometer Hygrometer (battery not included)1 x Manual Item Type: Thermometer HygrometerMaterial: PlasticWeight: Approx. 133g / 4.7ozProduct Size: Approx. 150x52x33mm / 5.9x 2.0x 1.3in Battery: 6F22 9V battery (battery not included)Humidity Range: 0%~100%RHResolution: 0.1Humidity Range:0%-20%RH Accuracy: 4.5%20%-80%RH Accuracy: 3.0%80%~100%RH Accuracy: 4.5%Temperature Range: -30℃~70℃Temperature Range:-30℃~0℃ Accuracy: 1.0℃0℃~70℃ Accuracy: 0.5℃-22°F-320°F Accuracy: 1.8°F32°F-158°F Accuracy: 0.9°FTemperature Resolution: 0.1°C/ 0.2°FScope of Application: Widely used in temperature and humidity measurement in industry, agriculture, meteorology, medical treatment and daily life.