Indoor and outdoor temperature readings. Monitors temperature/humidity rising falling or steady. Monitors barometric pressure rising falling or steady. Easy to read color LCD. Barometer. Temperature and ice alerts. Moon phase icons. 12/24-Hour clock with alarm and snooze. Low battery indicator. 200ft Sensor range. Indoor range: 32-122F (0-50C). Outdoor range: -4-140F (-20C-60C). Included 120V AC/DC adaptor. Can use 2 AA batteries for base and 2 AA for sensor (NOT included). 1 Year manufacturer limited warranty.