Celestron HomeCast Lite Weather Station 47020 is a simple weather station designed to help you monitor conditions inside and outside your home without taking up much space. These diminutive Celestron weather stations feature highly accurate temperature readings taken by up to three separate sensors with a range of 100 feet. One sensor, with an LCD temperature readout, is included with the weather station. On the main readout of the Celestron Home Cast Lite Wireless Weather Station, you can see the indoor and outdoor temperature (in either Celsius or Fahrenheit), along with minimum and maximum temperature trends over time. In addition, the HomeCast Lite has a 12 and 24-hour time display (with an alarm clock), plus a calendar up until the year 2069. Celestron has made these weather stations are versatile, too, since you can hang them from a wall or use the integrated stand to prop them up on any flat surface. Keep track of current conditions outside or inside your home or workplace with the Celestron Home-Cast Light LCD Weather Station.