-It can easily be routed through a window frame to measure outdoor conditions. -Great to make sure you set your air conditioner to a comfortable temperature. -It can also be used for science projects or terrariums. Specifications: large lcd display simultaneously showing indoor and outdoor temperature indoor humidity recording max/min temperature and humidity value automatically selectable temperature unit: centigrade or Fahrenheit with back stand and hanging hole at back side temperature range: colour: as the picture show indoor: