Sufficient contents: comes with 16 pieces mini hygrometer thermometers in black and white colors, each color contains 8 pieces, enough quantity to satisfy your indoor and outdoor supplies Detailed dimension: each humidity gauge monitor measures . small dimension makes it easy to carry and set in the corner of basement or anywhere you like, simple to measure the temperature and humidity around you Accurate to measure: this LCD display humidity temperature meter could measure the temperature range from minus 58 to 158 degrees Fahrenheit and humidity range from 10 to 99 percents RH, it will measure the conditions every 10 seconds, with high accuracy and clear LCD display, easy to read and check the temperature and humidity Versatile usages: this digital indoor humidity temperature meter is useful to measure the environment of temperature and humidity for most places, such as canning, jars, guitar case, humidor, office, bedroom, living room, kitchen, cigar room and more places Simple to use: our digital indoor humidity gauge monitors are powered by 2 pieces button batteries, just push open the battery box and put 2 pieces button batteries into the battery slot and the digital indoor humidity gauge monitor could work; The LCD will only displays the Fahrenheit Colour:Black & White Material:plastic Package Contents: 16 * Mini Hygrometer Thermometer Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.