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The RainWise MKIII-LR
Long Range Weather System



The MKIII-LR is a wireless, solar-powered weather station. Its original version, the best-selling MKIII, broke the price barrier in 2002 when it was released. It provides the best accuracy of any consumer weather station on the market and includes the capabilities and features desired by knowledgeable weather enthusiasts, with the easiest setup and installation of any instrument being sold today.

Since then, we have worked diligently to improve the performance of the MKIII. We have done just that with the MKIII-LR by dramatically expanding its transmission range to one mile (LOS)*. This distance vastly surpasses other comparable weather stations on the market, where the current long range distance is 1000 feet.

Another breakthrough feature for the new MKIII-LR is that it now transmits data every 2 seconds, without delay, so information sent to the LED display or computer interface is virtually real-time. It uses spread spectrum radio technology. While the range may vary due to environmental conditions (such as topography, building walls, snow, etc.), the MKIII-LR far surpasses (by as much as 4X) any other wireless weather station in its class and price range. It is the most accurate, reliable and easy to install weather station on the market today.


The MKIII-LR system is available in a variety of configurations, depending on what the user requires.

  • The MKIII-LR Sensor Assembly is included in every system as it collects and transmits the data. The solar-charged battery supply is guaranteed to provide continuous operation below 60 latitude and will operate at least 25 days without sun. The passive solar shield for the temperature/humidity sensor is modeled after the National Weather Service design. The solar panel and battery are guaranteed for five years. Its sleek design (just 5 x 6 x 27, and under 7 lbs) belies its rugged construction. The extension mounting mast, fabricated from 11/4 schedule #80 PVC pipe, will fit any standard tripod or TV antenna mount.
  • An attached Rain Gauge can also be included in a system.
  • The Weather Oracle multi-display can be purchased to display the Time (date), Temperature (outside, inside, wind chill, dew point), Relative Humidity (temperature/heat index), Barometric Pressure (rising, falling), Rainfall (current, accumulation), Wind Speed and Wind Direction (variation). Maximums and minimums are available to the month, day, hour and nearest minute. The display offers brightness controls to suit the ambient lighting conditions and can be wall-mounted or placed free-standing (a wall transformer powers the receiver). The MKIII-LR allows for multiple peripheral use. You can have as many displays or interfaces as you wish. The only limitation is range and power availability. The multi-display is available in an attractive cherry, mahogany or black wooden frame.
  • The MKIIICC-LR wireless computer interface records and stores weather data received from the MKIII-LR sensor assembly. Purchase this with the multi-display or instead of. It can be placed anywhere, as its not connected to the display in any way. The CC-3000 is normally shipped with a USB 2.0 interface. An RS-232 version is available for applications that require serial connections like cellular and satellite modems. The baud rate has been boosted from 9600 to 115,200. Even with extra memory download times are dramatically reduced. USB drivers are provided for Windows, Mac and Linux. Note: Only Windows based software is currently available. Each CC-3000 is shipped with a free version of Weatherview32 V8 Home Edition. Upgrades are available.

Whichever components you choose, the MKIII-LR system offers everything you need for a comprehensive professional or home-use weather station.





Range: 0 - 150 m.p.h.; 0 - 67 meters per second;

0 - 240 Kilometers per hour; 0 - 130 Knots.

Resolution: 1.0 unit.

Accuracy: 2% of full scale.


Range: Oracle Display has 16 point wind rose, current direction by bright LED, and direction variation by dimmer LEDs. Computer interface gives reading in degrees, 360=North, 090=East.

TEMPERATURE - Outside Range: -66 to +166 F; -54 to +74 C.
Accuracy: 0.5 F; 0.25 C.
TEMPERATURE - Inside Range: 32 to +122 F; 0 to +50 C.
Accuracy: 1.0 F; 0.5 C.
RELATIVE HUMIDITY Range: 0 to 100 % R.H.
Accuracy: 2 % at 25 C. Temperature compensated from -40 to 85C
DEW POINT Range: -40 to +140 F.
Accuracy: 2 F, 1.0 C.
Accuracy: 2.0, 1.0 C.
WIND CHILL Range: to -127 F; to -88 C.
Accuracy: 2 F, 1.0 C.
BAROMETER Range: 16.3 inches Hg. to 32 inches Hg; 551 to 1084 millibars (hPa), absolute reading. Digital offset for site altitude.
Accuracy: 0.05 inches Hg; 1.69 millibars (hPa). Temperature compensated from -40 to 85C.
RAINFALL Range: Unlimited Tipping bucket with 8 inch diameter collector.
Resolution: 0.01; 0.25 mm. Accuracy: 2% at 1.5 inches per hour.
TRANSCEIVERS Range: may be reduced by walls or other RF absorbing structures.
Each MKIII-LR system will transmit over 1 mile LOS*.
Frequency: 2.4Ghz
Update/sample Rates: Every 2 seconds, no delay.



Includes 2 year warranty from manufacturer.


MK III Components:

Sensor Assembly:

#WXRW-MK3RTN   MK III Sensor (No Rain Gauge - Standard Range):   $614.45 (List Price $675.00)   Qty:

#WXRW-MK3RTN-LR   MK III Sensor (No Rain Gauge - Long Range):   $814.45 (List Price $895.00)   Qty:

#WXRW-MK3RTI   MK III Sensor (Integrated Rain Gauge - Standard Range):   $704.45 (List Price $774.00)   Qty:

#WXRW-MK3RTI-LR   MK III Sensor (Integrated Rain Gauge - Long Range):   $895.45 (List Price $995.00)   Qty:


MK III Weather Oracle Multi Displays:

#WXRW-WO-MULTI-C   MK III Weather Oracle Multi-Display:   $426.95 (List Price $469.00)  

(Standard Range - Cherry Frame)
(Standard Range - Mahogany Frame)
(Standard Range - Black Frame)
(Long Range - Cherry Frame)
(Long Range - Mahogany Frame)
(Long Range - Black Frame)


MK III Weather Oracle Displays:

#WXRW-DISPL   MK III Weather Oracle Display (Standard Range):   $295.95 (List Price $325.00)   Qty:

#WXRW-DISPL-LR   MK III Weather Oracle Display (Long Range):   $359.45 (List Price $395.00)   Qty:

Data Logging | Aquisition

CC-3000 Data Logger:

The CC-3000 computer interface is the next generation data logger and computer interface for the MK III weather stations.

Connectivity, storage capacity and features have all been enhanced. The CC-3000 replaces the CC-2000 and MKIIICC interface.

#WXRW-CC3000   CC-3000 Data Logger (USB 2.0 Interface - Standard Range):   $359.45 (List Price $395.00)   Qty:

#WXRW-CC3000-LR   CC-3000 Data Logger (USB 2.0 Interface - Long Range):   $359.45 (List Price $395.00)   Qty:

#WXRW-CC3000R   CC-3000 Data Logger (Serial RS-232 - Standard Range):   $359.45 (List Price $395.00)   Qty:

#WXRW-CC3000R-LR   CC-3000 Data Logger (Serial RS-232 Interface - Long Range):   $359.45 (List Price $395.00)   Qty:

Mono Mount

The Rainwise Mono Mount is a flexible mounting alternative to the standard 3 foot tripod. Its quick and easy to install and can be mounted on a pitched or flat roof as well as a vertical surface such as a gable ends.

The Mono Mount is constructed from powder coated steel, aluminum and PVC. This mounting system is durable and stable. The slender design is simple and unobtrusive and is aesthetically pleasing. The adjustable base of the mount van be adjusted to mount on any pitch roof.

#WXRW-MK3MM   RainWise Mono Mount:   $44.00 (List Price $49.00)   Qty:

Tripod Stand

The 3-foot galvanized steel Rainwise Tripod Mounting Stand provides a solid mount for the MK-III weather station or WindLog and can be used on both flat and pitched roofs.

  • All Heavy 5/16" Bolted Construction.
  • Accepts up to 2-1/4" mast. Easy to tilt and service.
  • Can be removed without leaving holes in roof. Lessens chance of roof leaks.
  • Sturdier - Safer
  • Replacement feet kits & tar pad kits available.

#WXRW-TRIPOD   RainWise Tripod:   $49.95 (List Price $59.00)   Qty:


Instruction Manuals (.PDF files require Adobe Reader)
Manual for MK-III RTN-LR sensor assembly (without rain gauge)
Manual for MK-III RTI-LR sensor assembly (with rain gauge)
Manual for MK-III Oracle Multi Display
Manual for MK-III Oracle Standard Display
Manual for MK-III Computer Interface



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