Standard Range Sensor Array
List Price: $675.00
Our Price: $607.95
In Stock - Will Ship 04/28/2015
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The model MK-III-RTN RainWise wireless sensor array includes all of the sensor components found on the MK-III-RTI, except for the rain gauge. If you require a longer range system, the MK-III-RTN-LR transmits over one mile, line of sight!

The wireless, rugged outdoor sensor array runs completely on solar power. The MK-III solar charged battery supply is guaranteed to provide continuous operation below 60 degrees latitude and will operate for at least 60 days without sun.

Unless you're purchasing the unit as a replacement, the MK-III-RTN sensor array requires a RainWise Display and/or the optional Computer/Network Interface. The sensor array can broadcast weather data to multiple displays, computers or network interfaces. The sensor array transmits a packet of data every two seconds offset by 30 seconds.

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)
  • Indoor temperature (ºF or ºC) (w/ Optional Weather Oracle Multi Display only)
  • Outdoor humidity (%RH)
  • Outdoor wind chill temperature (ºF or ºC)
  • Outdoor dew point temperature (ºF or ºC)
  • Outdoor heat index temperature (ºF or ºC) (w/ Optional Weather Oracle Multi Display only or Computer/Network Interface)
  • Barometric pressure
  • 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)
  • Indoor temperature range: 32 to 122F (0 to 50C) (w/ Optional Weather Oracle Multi Display only)
  • Indoor temperature accuracy: 1F (0.5C)
  • 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)
  • Barometric pressure range: 16.3 to 32 inHg (551 to 1084 mb/hPa) absolute reading
  • Air pressure resolution: 0.03 inHg (1 mb)
  • Air pressure accuracy: 0.05 inHg (1.69 mb/hPa at 25C)
  • Heat index range: to 160°F (71°C) (w/ Optional Weather Oracle Multi Display only or Computer/Network Interface)
  • Heat index accuracy: ±2°F (1°C)
  • Heat index 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)
  • 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 array: 16.5" dia. x 33 " tall
    (419mm 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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