KERUI Indoor Temperature Humidity Sensor Room Temperature Humidity Detector Monitor Gauge Air Comfort Indicator ℉/℃ Switchable LCD Display Overview: This is an advanced indoor temperature & humidity sensor. The LCD screen displays the current temperature & humidity. The highest and lowest temperature & humidity are also shown on the screen. Can be used for home, baby room, office, school, supermarket, basement, warehouse, etc. Features: It detects the current temperature and humidity around environment. Supports tabletop, wall-mount and magnet-mount, 3 mounting modes. The highest and lowest indoor temperature & humidity will be automatically recorded and displayed all the time. Comes with air comfort indicator that shows the comfort level of your home. Easy to be aware of your environment conditions. Large fonts LCD display enables to see clearly even if standing far away. Fahrenheit (℉) and Celsius (℃) measuring units are switchable. Can be used for bedroom, baby room, basement, office, school, supermarket, warehouse, etc. Specifications: Temperature Measurement Range: -20-70°C Temperature Measurement Accuracy: ±1°C Humidity Measurement Range: 10%-99% Humidity Measurement Accuracy: ±2% (30-80%); out of this range ±3%  Measuring Interval: 10s Power Supply: 1 AAA battery (NOT included) Material: ABS Item Size: φ7.8*2.1cm/φ3.07*0.82in Item Weight: 59g/2.08oz Package Size: 8.4*8.2*2.5cm/3.30*3.22*0.98in Package Weight: 77g/2.71oz Package List: 1 * Temperature and Humidity Detector 2 * Screws 1 * User Manual