Hydronix is now supporting the Modbus RTU communication protocol.
All moisture sensors utilising firmware HS0102 v1.11.00 or above have the option to enable Modbus.
Most recent sensors can be upgraded to have this feature but please contact support with any questions. You will need to use Hydro-Com v188.8.131.52 and above in order to configure this option.
Download the user guide in English.