"CoolMaster"

CoolMaster is versatile bridge device connecting numerous Air Conditioning systems and any RS232 or USB capable device like Home PC, Embedded PC or Home Automation Controller. Exposing simple interface over RS232 communication line or USB bus, CoolMaster gains user application full control on indoor units and provides access to VRV, VRF system parameters.In other words CoolMaster hides complexity of internal Air Conditioning Communication line (including very unique physical layer) and instead gives simple, comprehensive, well documented protocol running on popular RS232 or USB connection
 

High Level HVAC Interface available with the Ness M1 System via CoolMaster and Serial Port Expander (101-214)

Models also available: 

1000D - RS232 Interface Adapter for Daikin VRV Systems, 
2000S - RS232 Interface Adapter for Sanyo VRF AC System., 
3000T - RS232 Interface Adapter for Toshiba VRF AC System, 
4000M - RS232 Interface Adapter for Mitsubishi Electric VRF AC System, 
9000H - RS232 Interface Adapter for Hitachi VRF AC System.

   Introducing CoolMasterNet – Connects Home Automation with HVAC Systems