My outside weather sensor is the Ambient Weather WH24B unit that wirelessly sends readings to my two weather gateways (Ecowitt GW1000 & Ambient Weather ObserverIP).  I also run CumulusMX software on a Windows mini PC that pulls weather data from the Ecowitt GW1000 and forwards the data to multiple other PWS services.  In total, I feed weather data to 10 different weather services globally.