The Hunter SOLAR SYNC sensor hardware is not compatible with the Hydrawise software. We do offer the VIRTUAL SOLAR SYNC watering type option in both Standard and Advanced modes.
This operates the same way as the Hunter SOLAR SYNC by adjusting the run time per zone. It uses daily Evapotranspiration (ET) from your selected weather stations instead of on-site ET so it does not require on-site Solar Sync sensor installation. If no weather station ET is available, then it will fall back to using forecast ET and historical ET. The virtual Solar Sync makes its adjustments based on the rolling average of the last three days of data.
Please visit this support section for setup details.