Do you know about the three combination of temperature and humidity clock?

Let's look at the best reference environmental temperature and humidity: optimum temperature 18 to human body 45-25 ℃ humidity 75% RH 30 to cure the disease, the most favorable environment 50% RH library, museum, archives, museums - 40 45-60% RH in the computer room, communication room RH cloth, cotton, textile for 40-60% 60% RH dairy products, sweets, snack store, fruit store 60 - Clock bell use: 70% RH temperature and humidity temperature and humidity is suitable for the environment of temperature and humidity have certain requirements, such as archives, laboratories, libraries, museums, computer room, hospital, warehouse, office and home. So there is a temperature and humidity clock is very necessary. Temperature and humidity clock can display the temperature field, humidity, time, intuitive and convenient; Safe and reliable, long life, fast reading. Temperature and humidity clock structure: wall-mountable, surface diameter: 200 mm, scope: 0 - 120 c 0 - 100% RH color: silver material: aluminum shell note: temperature and humidity clock from the rain, not device than on copper corrosion gas environment.