Londa 8730E3 Weather Station with Indoor Outdoor Thermometer Hygrometer, Remote Sensor and Atomic Clock Digital thermometer with wireless remote. Accurate data from the outdoor transmitter updates every 35 seconds. After you install the batteries, please wait for 10 to 60 minutes, because the sensor is more sensitive than main unit, then the temperature and humidity will gradually go steady. Comprehensive Weather Info: Shows the indoor and outdoor temperature, humidity, weather forecast, date, comfort levels, etc. Help you better plan your day and take care of yourself! It can also be used as a alarm. Supports Both Fahrenheit and Centigrade. Just put it on the table or hung it up, and you can enjoy a planed day with everything about weather in control. Battery Powered Transmitter: Wireless temperature transmits from weather resistant outdoor sensor, within 100 ft range. The transmitter can be easily hung up too. Definitely good partner in your life! Battery Powered: Require 5 AAA batteries (Not included) (3 for the Weather Station and 2 for the Transmitter), which can be easily purchased anywhere. No more unsightly wires in your home! LCD screen,Dimension: 5.63*1.18*4.80inches