Digital Wireless Weather Station with Indoor Outdoor Thermometer Hygrometer Sauna Temperature Digital Alarm Clock (Sensors-4) 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. Easy-to-read Display: Large LED screen with artful design for great viewing! Big screen and clear display. No more barrier in reading the info. 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 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! There are 2 Transmitters so you can measure 4 different outdoor Thermometer Hygrometer