10-10 A/C system 10. A/C and Safety System VOYAH FREE S/N Part name Loading quantity Remarks 1 PM2.5 sensor 1 2 Automatic A/C control unit 1 3 Room temperature sensor 1 4 Automatic A/C control panel 1 5 Fragrance generator 1 6 Expansion valve 1 7 PTC water heating assembly 1 8 PTC water heating bracket 1 9 Air quality sensor (AQS) 1