Stable Multiple Control over Up to 128 Units via 2-Way RS485 Communication Stable communication with multiple units is possible via RS485 communication interface using LAN and UTP cables even when the signal is weak. Up to 128 units can be connected and controlled remotely. Individual or Simultaneous Set Value Changes of TX3 Series Connected As a centralized control unit, RCU128 can set the temperaturse of TX3 Series connected individually or simutaneously. If the set value is changed by it, the set value change range of each TX3 unit is -10~+5℃. Rotating Display of Each Room Status It displays the status of each room for 10 seconds by rotation and temperatures of all the rooms can be monitored. Average Temperature Computation It computes the average temperatures of set and current temperatures to avoid fluctuation.