Monitors indoor and outdoor temperature and humidity
Backlit LED display lights up automatically in low light for easy reading
Measures wind speed and direction, wind chill, rainfall, barometric pressure
Automatically sets US Atomic Clock for precise time year-round
Moon Phase Calendar; measures 18 by 17.4 by 5.3 inches; weighs 5.1 pounds
The Honeywell TE821W with Atomic Clock monitors just about any weather condition created by Mother Nature. The TE821W can measure wind speed and direction; rainfall amount; indoor and outdoor temperature and humidity.
