Ambient Weather WS-1171B Wireless Advanced Weather Station with Temperature, Dew Point, Barometer and Humidity

Features:
Wireless outdoor and indoor humidity (%RH)
Outdoor humidity calibration
Wireless outdoor and indoor temperature (°F or °C)
Records min. and max temperature and humidity with Date and Time
Barometric pressure 24-hour history graph (in Hg or hPa)
Forecast Icon Based on Changing Barometric Pressure
Radio controlled time and date (WWVB & Dcf)
Automatically updates for daylight saving time (on / off option)
12 or 24-hour time display
Perpetual calendar
Time alarm with snooze
Includes one wireless remote sensor
LED backlight (temporary)
Wall hanging or free standing
Low battery indicator
Synchronized instant reception (SIR)
Specifications:
Wireless outdoor humidity range: 1% to 99% RH (+/-5% accuracy) with calibration
Indoor humidity range: 1% to 99% RH (+/-5% accuracy)
Wireless outdoor temperature range: -40.0°F to + 149°F (+/- 2°F accuracy)
Indoor temperature range: +32°F to + 140°F (+/- 2°F accuracy)
Transmission range: up to 330 feet (line of sight)
Transmission frequency: 433MHz
Power Requirements:
Receiver: 3 "AA" batteries (not included)
Wireless sensor: 2 "AAA" batteries (not included). Lithium recommend for long life and cold weather (see below)
Dimension (LxWxH):
Receiver: 7.25 x 4 x 1.25 in
Sensor: 3.5 x 2.75 x 1.25 in
Included:
User Manual
Updated User Manual available online