Hitachi VRF systems to Modbus Interface. IntesisBox HI-RC-MBS-1 INMBSHIT001R000 allows monitoring and control, fully bi-directionally, all the functioning parameters of Hitachi VRF Air Conditioners into Modbus RTU (RS-485) networks.The INMBSHIT001R000 gateway is wired directly to an indoor unit. This allows not only the control of the main AC functions such as operating mode, fan speed, temperature setpoint…but the monitoring of errors, alarms an..