This desk standing wireless forecasting features wireless outdoor temperature (F. C.), indoor temperature (F. C.),with minimum maximum temperature values displayed. Outdoor temperature range: 39.8 F. to 139.8 F. Indoor temperature range: 14.5 F. to 139.5 F. Transmission range: 200′. Clock requires 2 ”AAA” batteries (not included). Sensor requires 2 ”AA” batteries (not included). Receiver 3.15” L. x 1.5” W. x 5” H. Sensor 1.28” L. x 0.56” W. x 3.41” H