This indoor thermometer hygrometer is well-crafted and durable, and can serve you for a long time and will bring you a good experience. With the help of our wireless hygrometer thermometer gauge, you will be able to know in real time the weather temperature . Features -Color:Black -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 - Made of safe and reliable ABS materials, indoor outdoor thermometer is durable and hard to break. - Thermometer hygrometer is reliable and easy to use for homes, greenhouses and more. - workmanship, the design is simple, the function is practical wireless thermometer can meet your need well. - High precision numbers, with small error, reliable and sturdy, weather thermometer is very practical. - LCD digital display screen, the household temperature and humidity meter is easier to read. Package list: 2 Thermometer 2 x Launcher