About this item Package includes: you will receive 20 pieces mini hygrometer thermometer, enough quantity for your multiple purpose Measuring range and accuracy: the temperature humidity meter gaugeҳ temperature measuring range -58⠭158⬠humidity measuring range 10% - 99% RH, temperature measurement accuracy: ???? Humidity measurement accuracy: ????RH Wide application: the mini hygrometer thermometer can be applied to measure temperature and humidity of jar, canning jars, guitar cases, greenhouse, bedroom, kitchen and office, you can use for many ways Compact size: the electronic temperature humidity meters 1.87 x 1.1 x 0.6 inch/ 4.6 x 2.8 x 1.5 cm, the small gauges can be put it in the corner of the basement or attic, donҴ take much space and will monitor the temperature and humidity situation Digital display screen: the digital electronic temperature humidity meters require 2 x LR44 batteries (include), Fahrenheit (F) display only, temperature and humidity display the same size of figures