Description: 【No Battery Required】Wall-mounted thermometer and 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. 【Simple To Operate】 Thermometers easy to know current temperature and humidity No instructions necessary. This is the simplest thermometer with no buttons to operate. 【Two In One Design】Hygrometer displays both the temperature and humidity accurately; thermometer accurate from -20℉ and 120 ℉ (-30 ℃ and 50 ℃) humidity from 1% to 99% could accommodate all kinds of climates. 【Multi-Purpose】Humidity Meter designed with convenient kickstand and hanger built into the back it works well on tables or walls and is stealthy nicely in any small space and doesn t take up a lot of space in an office bedroom Patio Field Cellar Garden Humidors Greenhouse Closet Etc. Specifications: Indoor thermometer wall-mounted household greenhouse temperature and humidity meter hygrometer breeding thermometer Size: 23 * 6cm Temperature range:-30~50°C Humidity measurement range: -20-120 (RH) Color as shown Package Included: 1* Breeding thermometer Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data.