TYR1131 Features: * Weather station * Five line LCD shows indoor/outdoor temperature andhumidity * Mountable wind sensor measures speed, direction and outdoor temperature and humidity * Displays heat index and wind chill calculations * Features calendar, minimum/maximum and backlight * Transmits up to 200" * Reads in °F and °C scales * Requires 4AA batteries (not included) Dimensions: * Overall dimensions: 7.1" H x 11.6" W x 6.8" D