HABOTEST 4-in-1 Digital Psychrometer Portable Thermo-Hygrometer Mini Temperature and Humidity Meter Pen with Dew Point and Wet Bulb Temperature (Battery Not Included)

Features:
4-IN-1 METER: Accurately measure temperature, humidity, wet bulb and dew point.
HANDY METER: Weighing only 1.62 ounces, measuring 7 by 1.2 by 1.2 inches, compact and lightweight, easy to carry around.
PRACTICAL FUNCTIONS: Displays Celsius, Fahrenheit, Max. value, and Min. value.
EASY TO READ: Green backlight ensures clear visibility even in the dim light.
EASY TO USE: Without complicated instructions, extremely simple to use.
AUTO POWER OFF: Auto power off after about 30 minutes if there is no operations, save the power.
BATTERY POWERED: Powered by 2 pieces 1.5V AAA batteries.
APPLICATION: Can be used in home, apartment, greenhouse, aquaculture, terrarium, etc.
Note:
*Please refer to the user manual carefully before use.
*Batteries not included.
Parameters:
Ambient Temperature Range: -20℃~60℃ (-4℉~140℉)
Ambient Temperature Accuracy: 0℃~45℃1℃ (other: 1.5℃)
Humidity Range: 0.0%~99.9%RH
Humidity Accuracy: 20%~80%3.0%RH (other: 4.0%RH)
Wet Bulb Temperature Range: -20℃~60℃ (-4℉~140℉)
Wet Bulb Temperature Accuracy: 0℃~45℃1℃ (other: 1.5℃)
Dew Point Temperature Range: -50℃~60℃(-58℉~140℉)
Dew Point Temperature Accuracy: 0℃~45℃1℃ (other: 1.5℃)