Stay informed about the environmental conditions affecting the places and things you care about. With an AcuRite indoor & outdoor multi-sensor station with 3 sensors, you can accurately monitor temperature and humidity in four locations in and around your home. Thanks to its wide variety of features and functions, you can enjoy reliable, actionable Information empowering you to keep your home safe and in top condition. Simply pair the digital display with the three included wireless sensors. Each weather-resistant temperature and humidity sensor has a built-in digital thermometer and hygrometer to measure indoor or outdoor environmental conditions with precision and accuracy. All environmental conditions are conveniently shown on an easy-to-read digital screen. Includes daily high and low records for temperature and humidity. Alarms can easily be set up to notify you if conditions exceed your programmed ranges. Display powered by 3 AA alkaline batteries (not included). each sensor powered by 2 AA alkaline or lithium batteries (not included). It's more than accurate, it's AcuRite.