天气预报机 Weather Station with Outdoor Temperature and

features:
1) wireless outdoor and indoor humidity (%rh)
2) wireless outdoor and indoor temperature (°f or °c)
3) records min. and max. humidity
4) records min. and max. temperature
5) barometric pressure 24-hour history graph (inhg or hpa)
6) barometric pressure tendency arrow
7) forecast icons based on changing barometric pressure
8) receive and displays the radio controlled time and date (wwvb, dcf
version available)
9) automatically updates for daylight saving time (on / off option)
10) 12 or 24-hour time display
11) perpetual calendar
12) time alarm with snooze
13) can receive one sensor
14) high light led backlight
15) wall hanging or free standing
16) included transmitter wh2
17) synchronized instant reception
18) low power consumption (over 2 year battery life for remote sensor)

specifications:
1) wireless outdoor humidity range: 20% to 99% (+/-5% under0 to 45°c)
2) indoor humidity range: 1% to 99% (1% resolution)
3) wireless outdoor temperature range: -40.0°c to 65°c (-40°f to +149°f)
4) indoor temperature range: 0°c to 50 °c(32°f to +122°f)
5) temperature accuracy: +/- 1.0°c
6) transmission range: 100meter(330 feet)
7) transmission frequency: 433mhz

power requirements:
1) receiver: 3 x aa alkaline batteries (not included)
2) wireless sensor: 2 x aaa alkaline batteries (not included)