1. [Multi Functional] This temperature and humidity meter can be used for detecting relative humidity, ambient temperature, dew point temperature, and wet bulb temperature, with wide measurement range and high precise for dependable results. 2. [High Precise Probe] The temperature humidity meter features high sensitivity, high precise probe, with high refresh rate, providing fast and accurate measurement. It can continuously and accurately detect changes in temperature and humidity, allowing precise control. 3. [Multiple Modes] The temperature humidity meter is equipped with measurement modes including real time value measurement, maximum value, minimum value, data hold, catering to different measurement requirements. 4. [Clear Visibility] The thermo hygrometer features a double color reverse display screen and flashlight, ensuring clear readings in dark environments and convenient usage in complex surroundings. 5. [Wide Application] This thermo hygrometer can be used in environments such as refrigerated compartments, laboratories, basements, vegetable greenhouses, warehouses, and outdoor conditions. Item Type: Digital Temperature and Humidity Meter Relative Humidity: Range: 0-99%RH Accuracy: 3.0%RH (20%-80%), 4.0%RH (0%-20%, 80%-99%) Resolution: 0.10% Ambient Temperature: Range: -20-60 (-4-140) Accuracy: 1 (0-45), 1.5 (-20-0, 45-60), 2 (32-113), 3 (-4-32, 113-140) Resolution: 0.1, 0.2 Dew Point Temperature: Range: -50-60 (-58-140) Accuracy: 1 (0-45), 1.5 (-50-0, 45-60), 2 (32-113), 3 (-58-32, 113-140) Resolution: 0.1, 0.2 Wet Bulb Temperature: Range: -20-60 (-4-140) Accuracy: 1 (0-45), 1.5 (-20-0, 45-60), 2 (32-113), 3 (-58-32, 113-140) Resolution: 0.1, 0.2 Auto Shutdown: Automatic shutdown after 10 minutes of inactivity Sensor Type: High precise digital sensor Update Speed: 400ms Power Source: 3x 1.5V AAA battery (not included) Color: As Shown Material: plastic Package Contents: 1 x Digital Temperature and Humidity Meter 1 x English instruction manual 1 x Screwdriver 1 x Storage Bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.