Product Features- Simultaneously showing indoor & outdoor temperature、 Indoor humidity.- Recording Max/ Min Temperature and humidity value automatically.- One 1.5 m cable with probe for the measurement of the outdoor temperature.- Checks the maximum or minimum termperature and humidity by pressing the MAX./MIN. switch.- The memory will show the maximum or minimum temperature humidity of the period from the last reset on the relative.- Switchable temperature display for easy using: Centigrade and Fahrenheit.- Powered by one AAA battery.(Not Include)Specification:Indoor Temperature Range::	-10 centigrade~50 centigradeOutdoor Temperature Range::	 -50 centigrade~70 centigradeDegree of Error:	 +/-1 CentigradeHumidity Range:	25% RH~99% RHDegree of Error:	+/-5% RHDimension:	5.9inch x 1.1inch x 0.9inch (150 mm x 28 mm x 24 mm)Cable Length:	1.5 mPackage Included1 x In and Out Thermometer Hygrometer .