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Version 1.3 October 2020
Data Descriptions:
• time: Time of Message Reception
• model: SwitchDoc Labs FT020T AIO
• device: Serial Number of the sensor - changed on powerup but can be used to discriminate from other
similar sensors in the area
• batterylow: 0 if battery good, 1 if battery is getting low
• avewindspeed: Average Wind Speed in m/s *10
• gustwindspeed: Last Gust Speed in m/s *10
• winddirection: Wind Direction in degrees from 0-359.
• cumulativerain: Total rain since last reset or power off. in mm.*10
• temperature: outside temperature in F with 400 offset and *10 T = (value-400)/10.0
• humidity: Relative Humidity in %. light:
• Visible Sunlight in lux. uv: UV Index * 10 (meaning an uv index of 0.8 is in the example message above)
Temperature and Humidity Error Conditions
If the humidity level in Hex is 0xFF, this is an error
If the temperature level in Hex is 0x0FFF, this is an error
Clearly those are errors. Here are three more Errors from the temperature:
Valid range for temperature: (with 400 offset added)
-40.0F to 140.0F
Invalid value: 0X7FA
Below minimum: 0X7FC
Above maximum: 0X7FD
Valid Range for Humidity 10% -100%
Errors for Humidity:
Invalid humidity: 0x7A
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