Wireless In & Out Thermometer and HygrometerAn advanced thermometer hygrometer capable of measuring indoor and outdoor temperature, as well as relative indoor humidity. The large easy to read LCD acts as a receiver unit for a separate outdoor sensor unit. It will record max and minimum temperatures for quick referral and conveniently displays the time of day. Ideal for temperature or humidity sensitive environments such as museums, greenhouses, or to check if your home and office is too dry or