Features WORKING RANGE: The indoor temperature range is ‑10‑50℃, the outdoor temperature range is ‑50‑70℃, and the humidity range is 10‑95%RH. WITH 2 PROBES: This digital temperature humidity meter is equipped with 2 external probes, used to detect temperature and humidity, with high sensitivity. WIDE APPLICATION: This temperature humidity monitor is suitable for aquarium, incubator, or reptile water tank, such as frogs, scorpions, snakes, hamsters, etc. BATTERY POWERED: The digital monitor is lightweight and compact, and powered by 1 AAA battery (not included), making it easy to use anytime and anywhere. COMPACT SIZE: The temperature and humidity meter has compact size and simple structure, buttons operation, convenient and fast, with strong practicality. Specification: Item Type: Temperature and Humidity Meter Material: ABS Battery: 1 x AAA Battery (not included) Indoor Temperature Range: -10-50℃ Outdoor Temperature Range: -50℃-70℃ Humidity Range: 10-95%RH Application: Suitable for various reptiles such as frogs, scorpions, snakes, hamsters, etc., can also be used in incubators to control temperature. Package List:1 x Temperature and Humidity Meter 1 x User Manual Package List 1 x Temperature and Humidity Meter 1 x User Manual