Wireless indoor/outdoor temperature with trend arrow; Automatically updates for Daylight Saving Time; Low-battery icon for clock & sensor; Indoor temperature range: 32deg F-122deg F; Outdoor temperature range: -4deg F-140deg F ; Requires 2 AA alkaline batteries for receiver & 2 AA alkaline batteries for sensor;

Length: 12.70"
Width: 11.80"
Height: 1.70"