Feature: 1. Mini thermometer hygrometer allows you to quickly and easily understand the ambient temperature and humidity. 2. Humidity meter can measure humidity in the range of 10%-99%, and the temperature is accurate from -50°C to 70°C, providing comfortable life around pets or reptiles. 3. Integrate thermometer and hygrometer is within one meter, which can be easy to use. 4. The LCD digital screen clearly displays the numbers for easy reading so that you can use with confidence. 5. Such hygrometer keeps simple test, which not requires particularly complicated operations. Specification: Item Type: Humidity meter Color: Black / White (optional) Model: FY-12 Display: LCD Size: Approx. 48 x 28.6 x 15.2mm / 1.9 x 1.1 x 0.6in (the measurement has a small error) LCD Size: Approx. 35.7 x 16.8mm / 1.4 x 0.7in (small error in measurement) Humidity Display: Support Humidity Measurement Range: 10%～99% Humidity Display Resolution: 1% Humidity Sampling Period: 10 seconds (1 minute) Humidity Measurement Accuracy: ±5% Rated Voltage: DC1.5v (2 LR44 button batteries) Temperature Measurement Range: -50 to 70℃ Temperature Measurement Accuracy: ±1℃ (under normal temperature) Line Length: Approx. 1.5 meters / 4.9ft Battery Installation: 1. Flip to the back of this product, 2. Push the battery cover in the direction indicated by the arrows, 3. Put two LR44 (not included) button batteries into the battery slot. Package List: 1 x Humidity Meter Note: The probe of this temperature and humidity meter is not waterproof. Do not put the probe in water or humid places. And this temperature and humidity meter can't be used in refrigerators and freezers. Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.