This is made of ABS, provides more powerful and steady data transmission and will provide you with good service. The indoor and humidity gauge has practical functions, and can be well applied to baby room, greenhouse, and office and more. 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 - Accurate temperature and humidity monitoring, display temperature and humidity for indoor and outdoor. - Wireless hygrometer records and the comfort indicators will keep you aware of the indoor humidity at any time. - LCD display indoor outdoor is, shows a large number of numbers, the digital is very easy to read. - Adopts advanced wireless technology, temperature humidity monitor provides more powerful and steady data transmission. - Wireless can be applied to be used in company, factory, school, shopping mall, etc. Package list: 2 2 x Launcher