Sensor Array
List Price: $675.00
Our Price: $607.95
In Stock - Will Ship 11/03/2014


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The model MK-III-RTN RainWise wireless sensor assembly includes all of the sensor components found on the MK-III-RTI, except for the rain gauge. Unless you're purchasing the unit as a replacement, the MK-III-RTN sensor assembly requires a RainWise Weather Oracle multi-display and/or Computer Interface. The sensor assembly can broadcast weather data to one or more receivers, allowing you to have as many displays and computer interfaces in a building as you like. The MK-III Weather Oracle multi-display provides a complete set of current weather data that's viewable anywhere in a room. Available in a variety of finishes, this attractive readout can be set on a table or mounted on a wall.

If you require a longer range system, the MK-III-RTN-LR transmits over one mile, line of sight!

Note: We do carry a magnetic compass to help you orient your anemometer to true north. For more information on set up, please visit the anemometer page on our WeatherShack education center.


  • Outdoor temperature (ºF or ºC)
  • Outdoor humidity (%RH)
  • Outdoor wind chill temperature (ºF or ºC)
  • Outdoor dew point temperature (ºF or ºC)
  • Outdoor heat index temperature (ºF or ºC)
  • Wind speed (mph, km/h, m/s, or knots)
  • Wind direction
  • Includes anemometer and outdoor thermo-hygrometer
  • Outdoor Temperature range: –66 to 166°F (-54 to 74°C)
  • Outdoor Temperature accuracy: ±0.5°F (0.25°C)
  • Temperature resolution: 1.0°F (1.0°C)
  • Humidity range: 0% to 100%
  • Humidity resolution: 1%
  • Humidity accuracy: ±2% at 25°C (temperature compensated from -40 to 85°C)
  • Dew point range: –40 to 140°F
  • Dew point accuracy: ±2°F (1°C)
  • Dew point resolution: 1.0°F (1.0°C)
  • Wind chill range: –58 to 158°F (-50 to 70°C)
  • Wind chill resolution: 1.0°F (1.0°C)
  • Heat index range: to 160°F (71°C)
  • Heat index accuracy: ±2°F (1°C)
  • Heat index resolution: 1.0°F (1.0°C)
  • Wind speed range: 0 to 150 mph (0 to 67 m/s, 0 to 240 km/h, 0 to 130 knots)
  • Wind speed resolution: 1.0 unit
  • Wind speed accuracy: ±2% of full scale
  • Wind direction range: 1° to 360° (Degrees)
  • Wind direction graphical resolution: 22.5°
  • Transmission interval: every 2 seconds offset by 30 seconds
  • Transmission frequency band: 418 MHz
  • Transmission range: factory tested at 433 feet through two factory walls


  • MK-III sensor assembly: 6.5" dia. x 33 " tall
    (165mm dia. x 839mm tall)
Average Customer Rating 4.0 4 stars (based on 2 reviews)

By Tim Benner
From Mantua, OH
3 stars So far so good. No problems, seems like a quality unit for t
By David
From Eddyville, KY
5 stars Works as advertised. Very sensitive
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