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Ohauiti Weather Station - Specifications

Outdoor Data  
Transmission Distance in open field 100m (300 feet)
Frequency 433 MHz
Temperature range -40c to +65c (-40F to +149F)
Resolution 0.1c (0.2F)
Measuring range rel. humidity 10% to 99%
Rain volume display 0 to 9999mm (show --- if outside range)
Resolution 0.3mm (if rain volume < 1000mm) 1mm (if rain volume > 1000mm)
Wind speed 0 - 160km/h (0 to 100mph) (show --- if outside range)
Measuring interval pressure / temperature 48 sec
Water proof level IPX3
   
Indoor Data  
Measuring interval pressure / temperature 48 sec
Indoor temperature range 0c to +50c (32F to +122F) (show --- if outside range)
Resolution 0.1c (0.2F)
Measuring range rel. humidity 10% to 99%
Measuring range air pressure 700 - 1100hPa (27.13inHg - 31.89inHg)
Resolution 0.1hPa (0.001inHg)
Alarm duration 120 sec
   
Power consumption  
Base station 2xAA 1.5V LR6 Alkaline batteries
Remote sensor 2xAA 1.5V LR6 Alkaline batteries
Battery life
Minimum 12 months for the base station
Minimum 24 months for the thermo-hydro sensor


Cumulus

Free weather station software!

Cumulus is free software for retrieving, storing and displaying data from an electronic Automatic Weather Station (AWS).

Cumulus will store full weather records, along with daily, monthly, annual and all-time records, and graphical data. Cumulus can upload its data Collage of Cumulus screensto a web server and comes packaged with templated web pages for this purpose. Cumulus also supports automatic uploads to Weather Underground and CWOP/APRS.

Cumulus works with the Davis Vantage Pro and Vantage Pro2 weather stations (and the new Vantage Vue), the Oregon Scientific WMR-928 and WM-918 weather stations (and related models), Fine Offset stations such as the WH1081, and the La Crosse WS-2300 range.

Warning: If your weather station is a La Crosse and it is connected using a serial/USB adapter, then you will probably have problems using it with Cumulus, in that you will get erroneous data from time to time – this is a common problem with these stations when used in this way. There doesn’t seem to be anything I can do about this. For this reason, I am sorry to say that I cannot support the use of Cumulus in this way. Note that even if you are using a direct serial connection, I don’t actually own a La Crosse weather station, and there is no official documentation available for the protocol, so I am only able to give limited support for these stations, and if you have any problems it is unlikely that I will be able to anything about it.

Features

  • Free for personal and non-profit use, but a donation would be appreciated if you continue to use Cumulus after trying it
  • Runs on Windows XP,  Windows Vista, and Windows 7. It should also work fine on the corresponding Server operating systems.
  • Supports Davis Vantage Pro and Pro2, and Vue; Oregon Scientific WM918, WMR-918, WMR-928, WMR-968 weather stations; EasyWeather stations (MyDEL, Nevada, Watson, Fine Offset, WH1080, WH1081, W8681 etc); La Crosse WS-2300 and other models in the WS23xx range. For a more extensive list of supported stations, see this page in the wiki.
  • Easy to use, clean display
  • Choice of meteorological day – midnight to midnight or 0900 to 0900
  • Numeric and graphical display of data
  • Real time web display of wind speed and direction
  • Automatic upload of data to web sites, Weather Underground, CWOP/APRS, PSW Weather/WeatherForYou/HAMweather, Twitter
  • Ready-made web pages supplied, or build your own using web tags
  • Configurable alarms for various conditions
  • Sunrise, sunset and moon phase display
  • Displays historical data for any given month or year
  • Graphical display of historical data for any time period
  • Generation of xAP home automation weather reports
  • Comprehensive help file included
  • Free support available in the support forum
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