👍👍【Digital Thermometer】Mini Digital Humidity Thermometer allows you to easily know the environment temperature and humidity around you 
【Easy to Use】 Support °C/°F mode, and read display easily and immediately.Record Max. and Min. values of temperature and humidity. 
【Multi-functional scenes】Can be placed in household, guitar case, green house, office and labs. 
【Accurate readings】Temperature measuring range: 23℉-140℉ ; Humidity measuring range: 30%-90%RH 
【 Power Supply】 DC3.0V, one button CR2032 Item