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 - Brand: ledmomo. - Color: Black. - Material: ABS and Acrylic. - Size: Approx. 4.5x4.5x1.5cm/1.77x1.77x0.59inch. - Temperature range: -50 ~ 70 degree centigrade. - Measurement error: ±1 degree centigrade. - Humidity measurement range: 10% ~ 90%. - Humidity measurement accuracy: ±5%. - Humidity sampling cycle: 10 seconds (1 minute). - Rated voltage: .5V (1 tablet button battery). - Made of , it is practical and durable. Compact and portable. - Used to test humidity and temperature in real time. - Help to adjust the humidifier, settings, great for monitoring family's living conditions and health by preventing colds, dry skin, , mold. - that measures every 10 seconds. Clear LCD provides updated and accurate readings. - Great for home, office, car, school, hotel, laboratory, plants, reptile box, etc. Package list: 4 x ledmomo Digital Thermometer Hygrometer