Stronger signal (enhanced 433 MHz)Indoor/outdoor temperature (?F/?C)Daily highs and lowsQuick-read feature12-24 hour future forecastIcons with 14 different weather conditionsAtomic clock and calendarStay on top of changing weather with the AcuRite Weather Forecaster. With a stronger signal, this weather center works through walls and from long distances. The indoor/outdoor temperature readings display daily highs and lows, and a quick-read function allows you to see what you want. This weather forecaster features 12-24 hour future forecast; patented, self-calibrating for altitude with icons with 14 different weather conditions. The atomic clock and calendar feature accurate-to-the-split-second timekeeping and automatically adjust for DST. Range: 330. Temperature Range ? Main unit: 32?F to 122?F. Outdoor sensor: -40?F to 158?F. RF Dimensions - Main unit: 6.16"H x 7.86"W x 1"D. Outdoor sensor: 4.79"H x 1.575"W x .939"D. Requires 3 AAA and 2 AA batteries (not included). Manufacturer model #: 75077A1.