The thermometer hygrometer for inside is made of ABS, which is solid and stable, ensuring your long term use. The temperature and humidity monitor with large LCD display, which shows comprehensive information, inside/outside temperature and humidity, ensures an accurate personal for your location. Features -Color:White -Material:ABS -Size:15.20X9.55X2.20cm/5.97X3.75X0.86in -Size:10.50X5.00X2.60cm/4.13X1.97X1.02in - Power supply: 3 x AAA batteries(Not included) - Measuring range: - Indoor temperature display range: -9.9 degree centigrade ~ +50 degree centigrade & 14 fahrenheit scale ~ +122 fahrenheit scale - Indoor humidity range: 20%-95% RH - Outdoor temperature display range: -40 degree centigrade ~ +60 degree centigrade & -40 fahrenheit scale ~ +140 fahrenheit scale - Outdoor humidity range: 20%-95% RH - Resolution: - Temperature display resolution: 0.1 degree centigrade & 0.1 fahrenheit scale - Humidity display resolution: 1%RH - Error: - 0 degree centigrade to 40 degree centigrade/ 32 °F to 104 °F: ±1 degree centigrade/1.8°F - -20 ~ 0 degree centigrade/40 degree centigrade ~ 65 degree centigrade/-4 fahrenheit scale ~ scale/104 fahrenheit scale ~ 149 fahrenheit scale: ±2 degree centigrade/3.6°F - 40%RH to 80%RH: ±5%RH - workmanship, the design is simple, the function is practical wireless thermometer can meet your need well. - LCD digital thermometer hygrometer can be used in feeding rooms, rooms, office and other occasions. - High accuracy and quick refresh rate,this inside thermometer gives you the updates on your environment. - thermometer is perfect for home, reptile tank, room, office, incubator, garage, basement and more. - Accurately measure temperature and humidity, small errors, and you can read the numbers easily. Package list: 1 Thermometer 1 x Launcher