Rrimin New Blue LED Wireless Weather Station&Sensor Temperature Humidity Barometer RCC eatures: Watch the change of weather from your home or office External Wireless sensor with LCD Display feeds back to main unit 3 Channel Selection for Addtional External Wireless Sensors Stunning 'Cool Blue' LED Display 12 / 24 Hr Digital Radio Controlled Clock (RCC) Sunrise and Sunset in 150 Major City Locations Daylight Saving Time Dual Alarm Clock with Snooze Indoor and Outdoor Temperature ( °F or °C Option) Indoor and Outdoor Humidity (% RH) Min and Max Memory of Temperature and Humidity Barometer with 12 Hour History Weather forecast Barometric Units for Option: mb/hpa, in/hg, Barometer Trend Indication World Time Zone Setting Comfort Display Temperature and Frost Alert Temperature Trend Moon Phase Tide Phase (High/Medium/Low - Spring/Neap Tides) Low Battery Indicator Specifications: Function RF 433 MHZ Up to 3 Outdoor Sensors (additional senors at extra cost) RCC receiving MSF Outdoor temperature range: -29.0 °C to + 60.0 °C Indoor temperature Range: 0 °C to + 50.0 °C Relative Humidity Indoor and Outdoor Range: = 20% - 95% Forecast: Sunny / Slightly-Sunny / Cloudy / Rainy / Snow Package inckuded: 1 x Thermometer 1 x Outdoor Sensor 1 x User Manual