{"NO BATTERY REQUIRED" Outdoor/Indoor Thermometers, This thermometer hygrometer is mechanical and has a longer life expectancy in use, you don't worry about cold weather draining the battery since the analog work well but no batteries needed replacing. EASY TO INSTALL Outdoor/Indoor Hygrometer Thermometer, Easy to know current temperature and humidity.

The large screen and clear numbers make it easy to read even when standing far away. TWO IN ONE DESIGN Outdoor/Indoor Humidity Monitor, The small and compact monitor displays both the temperature and humidity accurately; thermometer accurate from 0℧ and 120℧, humidity from 1% to 99%, could accommodate all kinds of climates. MULTI-PURPOSE Temperature Humidity Gauge Meter with convenient kickstand and hanger built into the back, it works well on tables or walls and is hidden nicely in any small space and doesn't take up a lot of space in an office, bedroom, cigar, incubator, etc