All Features:

    Weather forecasting function with 3 weather icons and weather tendency indicator
    Wireless outdoor temperature (°F or °C)
    Wireless outdoor humidity (%RH)
    Monitors indoor temperature (°F or °C)
    Monitors indoor humidity (%RH)
    Records MIN/MAX temperature with time and date of recording
    Records MIN/MAX humidity
    Barometric tendency arrow
    Barometric pressure with 24 hour history graph (in inHg or hPa)
    Indoor comfort level icon
    12 Moon phases
    Atomic time and date with manual setting
    Automatically updates for Daylight Saving Time (on/off option)
    12/24 hour time display
    Perpetual calendar
    Time zone setting
    US time zone map
    Time alarm with snooze
    Low battery indicator on receiver
    Fold out stand included
    Wall hanging or free standing
    Can receive up to 3 sensors
    LCD contrast setting: Levels: 0 to 7

IT-915MHz

Specifications:

    Wireless transmission range: 330 Ft
    Indoor temperature range: 14.2°F to 139.8°F (-9.9°C to 59.9°C)
    Outdoor temperature range: -39.8°F to 139.8°F (-39.9°C to 59.9°C)
    Indoor/Outdoor relative humidity: 1-99% RH
    Receiver (WS-9047TWC-IT): 2 "C" alkaline batteries (not Included)
    Sensor (TX29UDTH-IT): 2 "AA" alkaline batteries (not Included)
    Battery life: Up to 24 months

Dimensions:
    Receiver: 7.49" x 1.33" x 7.65"
    Sensor: 1.50" x 0.83" x 5.05"