Feature: 1. With LCD display, the measurement results can be displayed intuitively and clear readings. 2. Measure ambient temperature and humidity, wet bulb temperature, and dew point temperature. 3. Automatic shutdown and low battery prompt, low power consumption, to ensure long battery life. 4. With maximum/minimum value and temperature ℃/℉ conversion, data can be read quickly and accurately. 5. Used in laboratories, industry, engineering, construction and other professional environments. Specification: Item Type: Temperature Humidity Pen Material: ABS Ambient Temperature: -20℃-60℃ (-4℉-140℉) Resolution: 0.1℃ (0.1℉) Accuracy: ±0.5℃ Environmental Humidity: 0-100% Resolution: 0.1% Accuracy: ±3% Wet Bulb Temperature: -20℃-60℃ (-4℉-140℉) Resolution: 0.1℃ (0.1℉) Accuracy: ±0.5℃ Dew Point Temperature: -50℃-60℃ (-4℉-140℉) Resolution: 0.1℃ (0.1℉) Accuracy: ±0.5℃ Display: LCD Power Supply: 2 x 1.5V AAA Dry Battery (Battery Not Included). Package List: 1 x Temperature Humidity Pen (Battery Not Included)1 x Manual