The AcuRite Wireless Thermometer with Indoor/Outdoor Temperature and Humidity Sensor offers convenient and reliable digital thermometer and humidity readings in multiple locations. The main unit displays indoor temperature and humidity where it sits, while the wireless temperature and humidity sensor lets you keep tabs on a second indoor or outdoor location. The bold, easy-to-read LCD screen auto cycles through indoor and outdoor environment readings. The indoor/outdoor thermometer and humidity sensor offers a 165 foot (50 meter) wireless range. The display stands upright for tabletop use or is wall-mountable. Limited one-year warranty. It's more than accurate, it's AcuRite. Wireless Thermometer with Indoor/Outdoor Temperature and Humidity Sensor Digital thermometer display features a built-in temperature and humidity sensors for indoor and outdoor temperature (Fahrenheit and Celsius) and relative humidity (RH) readings Totally wireless tabletop or wall-mountable design Indicator for wireless sensor signal strength Auto-cycle feature toggles between indoor and outdoor readings Wireless Temperature and Humidity Sensor Measures temperature and humidity Wireless range up to 165 feet (50 meters) Transmits data every 30 seconds Durable, all-weather construction - perfect for indoor or outdoor use Easy installation includes integrated hanger. Brown Box.