Ambient Weather WS-2800 Advanced Wireless Color Forecast Station with Temperature, Humidity and Barometer The WS-2801 advanced wireless color forecast station is packed with features at a very affordable price and includes a logical, easy to read color screen layout The WS-2801 features a color forecast Icon that reacts to changes in barometric pressure, providing a forecast for upcoming weather in the next 24 to 48 hours with Reasonable accuracy Equipped with an atomic clock, time is set automatically via radio and in synch with the U.S. Atomic clock for utmost accuracy and automatically sets adjusts for daylight savings time The remote wireless sensor transmits up to 300 feet line of sight (100 feet under most conditions) includes an LCD display, so the temperature and humidity can be read in both locations.Other features include Min and Max that resets daily or manually, barometric pressure trend arrow, and Moon Phase Frequency: 433 MHz