4-Pack Mini Digital Temperature Humidity Meters Gauge Indoor Thermometer Hygrometer LCD Display Fahrenheit (℉) for Reptile Tank,Jars,Guitar Case,Greenhouse, Garden, Cellar, Fridge, Closet Description Accuracy The humidity measuring range: 10%-99%RH with ±5% RH tolerance; the temperature measuring range: -58℉-158℉with ±2°F tolerance Mini size Mini Size making it ideal for use in jars, incubators, brooders,reptile tank, guitar case any other place Long Battery Life This Mini hygrometer thermometer is powered by 2 LR44 battery that provides 12-18 months of battery life. (Include 4 LR44 Backup Batteries) Specification: Type: Digital Thermometer Hygrometer Dimension: 1.89 x 1.13 x 0.6" (48 x 28.6 x 15.2mm) Humidity measurement range: 10%-99% Humidity measurement accuracy: +/-5% Humidity sampling period: 10 seconds Battery Type: LR44 button batteries Temperature measurement range: -58℉-158℉ Temperature measurement accuracy: ±2℉ (under normal temperature) Function: Measuring temperature and humidity Package: 4 x Digital Thermometer Hygrometer (Battery Included) 4 x LR44 Backup Batteries Features: Mini Digital Humidity Thermometer allows you to easily know the temperature and humidity around you 2in1 meter with built-in probe; digital electronic thermometer and hygrometer for measuring temperature and humidity for indoor use Fahrenheit (F) display, this thermometer displays temperature in Fahrenheit Temperature measuring range: -58F-158F ; Humidity measuring range: 10%-99%RH (Measures conditions every 10 seconds) Temperature measurement accuracy: 2F; Humidity measurement accuracy: 5%RH The mini hygrometer thermometer widely use in jars, reptile tank, guitar case, incubators, brooders, office, green house and any other place that requires monitoring of temperature and humidity levels Product Details: Color: Black Brand: Veanic Product Dimensions: 1.89"W x 1.13"H Item Weight: 0.01 Ounces Upper Temperature Rating: 158 Degrees Fahrenheit Product Dimensions: 1.13 x 0.99 x 0.2 inches Item Weight: 0.01 ounces Manufacturer: Veanic Item model number: 8541833457 Batteries: 2 LR44 batteries required. Is Discontinued By Manufacturer: No Care instructions: Wipe Clean Number of pieces: 4 Batteries required: No