This product is a crawler electronic temperature and humidity meter with built-in probe. With small size, beautiful and practical, accurate measurement, convenient for the use of smaller feeding space, every 5 seconds refresh data, at any time to monitor the feeding environment. Suitable for all kinds of reptiles such as: spiders, scorpions, horned frogs, lizards, chameleons, tortoises, snakes and so on. Features: This product is a crawler electronic temperature and humidity meter with built-in probe. The digital display give a Humidity reading as a RH% and the temperature is displayed in Can be used in reptile vivariums, home/office, Sheds, Greenhouse, Grow room or anywhere else you want to monitor the environment. Every 5 seconds refresh data, at any time to monitor the feeding environment. With small size, beautiful and practical, accurate measurement, convenient for the use of smaller feeding space Specification: Temperature test accuracy:1.0 Temperature sampling cycle: 2 seconds Relative humidity test range: 10%-99% Humidity display resolution: 1% Humidity testing accuracy:5% (under the room temperature is 25) Temperature: - 50 to 60(measure temperature below -50, display L O;measure temperature higher 60,display H I Display resolution: Display mode: LCD (three and a half) Power consumption: 5 milliwatts under working condition Battery: 2 x 1.5v LR44 button battery (not included) Temperature measuring accuracy:1 Size:47*27*13mm/1.9*1.1*0.5in Weight: Approx.20g/0.7oz Package list: 1 x Temperature Humidity Meter