IMPROVE AIR CIRCULATION- Place the reptile vivarium fan on terrariums top mesh to blow wind into the reptile enclosure, which improves air circulation, creates cooling breeze and eliminates odors. creating a cooling breeze for your pet and exchanging well- maintained air. AUTOMATIC HUMIDITY CONTROL- Set your desired humidity level, once the humidity is higher than your set value, and this cooling fan for reptiles will work automatically to decrease humidity by 3- 5 percent within minutes. DIGITAL DISPLAY- The ventilation fan for reptile enclosure is very easy to operate with a SET or MANUAL button. Digital display shows you the temperature and humidity in real time. EASY INSTALLATION - No tools required! Simply place the fan on the top mesh or use the included hook to secure it on the terrarium, fits terrariums with wall thickness up to 15mm. PERFECT FOR REPTILE ENCLOSURE - 28dB low running noise ensures the ventilation fan wont scare your pets. It has a strong wind and low noise feature that makes it ideal for your reptiles comfort. Suitable for both rainforest or desert reptile. › See more product details Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.