Dear customer: Starting from September 2022, Airmar Technology will streamline and integrate the meteorological station product line from the original 11 models to 6 models. These six models retain all the appearance, dimensions, and functions of the original model, and simplify customer model selection. From a technical perspective, the PCBA boards used in 150WX, 200WX, and 220WX are completely identical, and there is no need to distinguish between previous models. The same applies to 110WX and 120WX. Please note that once model merging is implemented, 200WX will output $GPGGA statements for GPS location information, $GPVTG for SOG and COG, and $GPZDA for date and time. In addition, the Heading statement is disabled by default at the factory, but can be enabled as needed.