- 3 Air Comfort Level Indicator: This digital thermometer features three clear icons—WET, OK, and DRY—that indicate indoor air conditions. Monitor home humidity and temperature easily, allowing you to optimize your living environment by adjusting your humidifier, dehumidifier, or humidistat. - High Accuracy and Fast Refresh: With a wide measuring range of -4.0℉ to 158.0℉ (-20℃ to 70.0℃) for temperature and 10% to 99% RH for humidity, this indoor thermometer provides reliable readings. It boasts an accuracy of ±5% RH and ±1.8°F, refreshing data every 10 seconds to keep you informed of environmental changes. - Compact and Easy to Read: This lightweight digital hygrometer is portable and perfect for various settings, including bedrooms, offices, greenhouses, and camera drying boxes. The large LCD display features bold numbers for easy readability, ensuring you can quickly assess your indoor climate. - Versatile Mounting Options: Choose from three mounting methods—wall mount, magnet attachment, or table stand—to place your thermometer wherever you need it. A °F/°C selector is conveniently located on the back. The device operates on 2 x AAA batteries, providing approximately 12 months of use (batteries not included; battery slot is accessible by sliding the magnet cover). Use Scenarios: - Use in a bedroom to maintain optimal humidity for better sleep quality. - Place in a greenhouse to monitor and adjust moisture levels for plant health. - Utilize in a wine cellar to ensure the perfect climate for wine preservation.