Sensor Array
List Price: $675.00
Our Price: $607.95
In Stock - Will Ship 03/05/2015
If Ordered By 3:00 PM ET
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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 magnetic compasses to help you orient your anemometer to true north. Those can be located under the "Accessories" tab shown above. 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
Accessories for your RainWise MKIII-RTN
Product Title
RainWise CC-3000
Wireless Computer Interfaces
Our Price: $355.95
Product Title
MK-III Mono Mount
Our Price: $49.95
Product Title
RainWise W/O-MULTI
Weather Oracle Multi Display
Our Price: $355.95
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RainWise POD3
MK-III Mounting Tripod
Our Price: $49.95
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Tru-Find Compass
Compass w/Lanyard
Sale Price: $7.95
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