Honeywell TE653ELW portable barometric weather forecaster, automatically sets to the us atomic clock, indoor/outdoor temperature, 12 to 24 hour weather forecast (with icons), programmable ice warning alarm, outdoor temperature range: lithium batteries:-38-degree farenheit to 158-degree farenheit (-38.8-degree celsius to 70-degree celsius) alkaline batteries:-4-degree farenheit to 158-degree farenheit (-20-degree celsius to 70-degree celsius), indoor/outdoor humidity range 25-percent to 90-percent, comfort level indicators, remote channels auto-scan, min/max memory for indoor/outdoor temperature and humidity, 24 hour barometric pressure history chart, monitors temperature and humidity in up to 3 remote locations, included remote sensor (TS33C) transmission range of up to 100-feet (30-meters), moon phase display, enhanced blue backlight, wall mount or desktop option, white.