This driver is for the Sony STR-ZA series AV Receivers using the Sony CIS-IP2 IP control protocol via Ethernet. Version 1.01 Added Tuner Active variables for all zones
. Version 1.02 Added Volume Step commands and variables and Volume Display Mode variables and events. Versions 1.12-1.13 adds setting for firmware version, source selections and sound field mode functions and variables for broader compatibility with current model Sony receivers. Version 1.14 adds additional GUI commands and adjusts for STR-ZA810ES model feedback. Version 1.15 Fixes an issue when STR-ZA810ES reports volume as string and not an integer.