User's Manual
Page 27
1 GlossaryofTerms
Term Definition
Accuracy Accuracy is defined as the ability of a measurement to match the
actual value of the quantity being measured.
Hygrometer A hygrometer is a device that measures relative humidity. Relative
humidity is a term used to describe the amount or percentage of
water vapor that exists in air.
Range Range is defined as the amount or extent a value can be measured.
Resolution Resolution is defined as the number of significant digits (decimal
places) to which a value is being reliably measured.
Wind Vane A wind vane is a device that measures the direction of the wind. The
wind vane is usually combined with the anemometer. Wind direction
is the direction from which the wind is blowing.
2 Specifications
16.1 WirelessSpecifications
• Line of sight wireless transmission (in open air): 300 feet, 100 feet under most conditions
• Frequency: 433 MHz
• Update Rate: 60 seconds for rain sensor and thermo-hygrometer sensor, 16 seconds for wind sensor.
16.2 MeasurementSpecifications
The following table provides specifications for the measured parameters.
Measurement Range Accuracy Resolution
Outdoor Temperature -40 to 140 °F ± 1 °F 0.1 °F
Outdoor Humidity 10 to 99% ± 5% (only guaranteed
between 20 to 90%)
1 %
Rain 0 to 396in <0.6in: ±0.04in,
0.6in to 396in: ±7%
<39.4in (0.012in)
>39.4in (0.04in)
Wind Direction 0 - 360 º 45º (8 point compass) 45º (8 point compass)
Wind Speed 0 to 112mph 4.5 mph ~22.4mph: ±
6.7mph, 22.4mph ~112mph:
±10% (whichever is greater)
0.1mph
16.3 PowerConsumption
• Adaptor: 6V~ 500mA
• Thermo-Hygro Sensor : 2 x AAA alkaline batteries or Lithium batteries (not included)
• Rain sensor: 4 x AAA alkaline batteries or Lithium batteries (not included)