Celestron 47021 HomeCast Weather Station 433MHz RF receiving frequency with 100 foot range, Use up to 3 remote sensors (1 included), Weather Forecast display with 5 animated icons 3 color Comfort Indicator Bar display Moon phase display Min/Max temperature readings and alert Temperature Measuring range: Humidity range: 20 99% Barometric Pressure and Temperature trend indicators Barometric Pressure and Temperature trend indicators 12/24 hour time display Alarm Clock with Snooze feature Real time weather information 5 icon animated display gives quick reference to the current weather