Functions: One-channel for temperature measuring. One-channde for humidity measuring. Big screen LCD display. Max. And Min. Temp. Memory and reset functions. Switch between celsius and fahrenheit, clock and alarm clock functions. Suitable for locales such as refrigerator storage, household, office and so on.
Temperature: In side temperature: -30 to +50 celsius(-22 to +122 fahrenheit ) Out temperature: -50 to +70 celsius(-58 to +158 fahrenheit) Humidity: 20 percent to 99 percent Resolution: Temperature: 0.1 humidity 1percent Accuracy: Temperature: 1 celsius humidity 5 percent Power: DC1.5V 7# alkaline battery(optional). Product size: 110*59*20 Screen size: 60.5*40