4-piece portable room thermometer and hygrometer set, black

Mini, durable, portable Measures indoor/outdoor humidity and temperature. Contains 4 batteries High reliability and high accuracy. Conversion between Fahrenheit (°F) and Celsius (°C) (°C/°F). Humidity measurement range 10% to 99% RH, humidity measurement accuracy: +/- 5% RH. Temperature measurement range 0°C to 70°C, temperature measurement accuracy: +/- 1°C °C. Fast response, measuring every ten seconds via 24 sensitivity vents to provide the most recent and accurate readings. Product Description: More than that! Built-in installation type! LCD digital display! Widely used in homes, offices, cars, schools, hotels, laboratories, nurseries, aquaculture facilities, instrument workshops, libraries, factories, and air-conditioned locations, etc. Specification Type: Digital Thermometer/Hygrometer Material: PVC Plastic. Display: Always-on LCD screen. Mounting Plate Hole Size: D42 mm. Humidity Range: 10% to 99% RH (Humidity Measurement Accuracy: +/- 5%) Temperature Measurement Range: 0°C to 70°C. (Temperature measurement accuracy: +/- 1°C). Dimensions: 1.7" x 1.7" x 0.6" / 44 mm x 44 mm x 15 mm (diameter: 44 mm / 1.7"). Batteries included. 1.5V, LR44 button cell size. Color: Black. Package includes: 4 x Thermometer Hygrometer (includes 4 batteries)