Features: With a Large LCD screen: easy to read the temperature and humidity of your room at a glance. Very precise: this thermometer is accurate enough to create readings within 1 degree and humidity is within 5%. Compact design: small and light enough for saving space and carrying around. It can help you adjust the humidifier, dehumidifier settings and humidistat, great for monitoring family's living conditions and health by preventing colds, dry , asthma, allergy, mold. Mini size also perfect to use in incubators, brooders, cigar humidors, reptile tank. Specification:Weight: Approx.22g/ 0.8ozSize: Approx.48 * 28.6 * 15.2mm/ 1.9 * 1.1 * 0.6inColor: Black/ White (Optional)Humidity Range: 10%~ 99%Temperature Range: -50℃~70℃Sampling Period: 10sHumidity Accuracy: ±5%Temperature Accuracy: ±1℃Operating voltage: 1.5VBattery Type: 2 * AG13 Button Battery (Included)Package List:1 * Humidity ThermometerNote: Please allow slight measuring deviation due to manual measurement. Please note that the shell structure of this product will be sent randomly.How to install the batteries:Step1: turn over the thermometer, push the battery cover as the arrow direction.         Step2: Put 2 AG13 button batteries into the container, then close the cover.1、With a Large LCD screen: easy to read the temperature and humidity of your room at a glance. 2、Very precise: this thermometer is accurate enough to create readings within 1 degree and humidity is within 5%. 3、Compact design: small and light enough for saving space and carrying around. 4、Mini size also perfect to use in incubators, brooders, cigar humidors, reptile tank. 5、It can help you adjust the humidifier, dehumidifier settings and humidistat, great for monitoring family's living conditions and health by preventing colds, dry skin, asthma, allergy, mold.