flintronic 4pcs Room Thermometer Hygrometer Indoor, Mini Digital Temperature Humidity Meter Gauge, Accurate Hygrometer with Clear LCD Display and Face Icons for Home Baby,Office, Garden(with Battery) A 4pcs White

😊🙁【Smart Digital Thermometer Hygrometer】 The mini digital hygrometer has 2 types of icons. When the humidity is between 40% and 70%, it will display a smiling face. When the humidity is lower than 40% or higher than 70%, it will display unhappy, so you can Keep your home healthy and comfortable at a glance. (Deviation ±2°C and ±5%RH is normal)
☀【Temperature measurement range】Temperature measurement range: -10℃~70℃. Temperature measurement accuracy: ±2℃. The measurement conditions are refreshed every 10 seconds.
💦【Humidity measurement accuracy】 Measuring range of indoor/outdoor humidity: 10%RH-99%RH. The deviation accuracy of humidity measurement: ±5%RH.
☑【Small and long battery life】 This hygrometer thermometer (4.3 * 4.3 * 1.3 cm, weighing only 21 grams) is small, durable and portable, enough to save space and carry it with you. Powered by CR2032 (including battery).
☑【Wide application】 Thermometer and hygrometer can be used in homes, offices, automobiles, schools, hotels, laboratories, kindergartens, aquaculture, instrument workshops, libraries, schools, factories and air-conditioned places.