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

With built-in high precision temperature and humidity sensor for measuring temperature, humidity, wet bulb and dew point, the temperature and humidity meter is small enough to be hold in your pocket.

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℃);

Specifications:
Material: ABS; 
Color: Black and Red; 
Power: 2pcs, 1.5V, AAA batteries (Batteries Not Included); 
Item Size: 18*3*3cm / 7.08*1.18*1.18in; 
Item Weight: 46g / 1.62oz; 
Package Size: 21.5*5.5*4.3cm / 8.46*2.16*1.69in; 
Package Weight: 99g / 3.49oz;

Packing List:
1 * Thermo-Hygrometer; 
1 * User ManualManual