Mini digital hygrometer/thermometer allows you to easily know the environment humidity and temperature. Great for monitoring family's living conditions and health. Compact and light enough for saving space and carrying around. Feature - :ledmomo. - Color: Black.- Material: ABS and Acrylic.- Size: Approx. 4.5x4.5x1.5cm/1.77x1.77x0.59inch.- Temperature range: -50 ~ 70.- Measurement error: 1.- Humidity measurement range: 10% ~ 90%.- Humidity measurement accuracy: 5%.- Humidity sampling cycle: 10 seconds (1 minute).- Rated voltage: DC1.5V (1 tablet AG13 button battery).- Made of premium material, it is practical and durable. Compact and portable.- Used to test humidity and temperature in real time.- Help to adjust the humidifier, dehumidifier settings, great for monitoring family's living conditions and health by preventing colds, dry skin, asthma, mold.- Fast response that measures every 10 seconds. Clear LCD provides updated and accurate readings.- Great for home, office, car, school, hotel, laboratory, plants, reptile box, etc.Packing list: 4 x ledmomo Digital Thermometer Hygrometer