Active Air's indoor-outdoor thermometer gives you more. Made of sturdy materials to stand up to the climate of your indoor grow room, this essential tool features a large display to read the current temperature and humidity levels. A remote probe allows you to sample two temperatures at once. Record the high and low points for both temperature and humidity.

• 3 meter sensor for temperature reading only
• Relative humidity sensor located on side of unit
• Alarm clock function at 12 and 24 hours