Digital, wireless thermometer has indoor temperature range of 32 to 122 degree F (0 to 50 C) and outdoor range of -20 to 158 degree F (-29 to 70 C). Features: minimum and maximum temperature memory recall, rainfall memory recall, temperature trend arrows, rain history bar chart, programmable temperature alerts, clock and calendar. Up to 100' transmission. Self-emptying rain cup transmits a signal back to base unit with total. Base unit: 3.75" W x 4.75" H. LCD screen: 2" W x 2.75" H. Rain gauge: 6.5" W x 4.5" H x 3.5" D.