This is a digital temperature humidity sensor intended for Davis Vantage Pro2 units which began production in early 2016 and specifically have a manufacturing code which starts with AS or later ( e.g. AT, AU, AV, etc.). This module will work in a “plug-and-play” fashion with following models (for all geographical versions USA, EU, UK, OV) with the above stated manufacturing code:
This module will also work with Davis Vantage Pro2 units manufactured after January 2006 through manufacturing code AR, however, it will result in a reading which is 0.5 degrees Celsius (0.9 degrees Fahrenheit) too high. This error can be offset and corrected in the console as a calibration procedure (see page 26 of your console manual for calibration).
New Temperature Humidity sensor spec
Temperature – ±0.3°C (±0.5°F) across entire range
Humidity – ±2% across entire range
Old Temperature Humidity sensor spec
Temperature – ±0.5°C (±1°F) above -7°C (20°F) and ±1°C (±2°F) under -7°C (20°F)
Humidity – ±3% (0 to 90% RH) and ±4% (90 to 100% RH)