Solution
● Two stand-alone RS485 communication terminal;
● Built-in current detector, real time detect compressor current and upload datas to supervisory;
● Phase protection and autocorrect function;
● Fresh air damper control or pipe heat exchanger;
● Automatic chain reaction when temperature overrange;
● Real time clock and alarm history function;
● Duty standby function, support N+1 modes;
● Compatible with SL220M series fan speed controller for entire solution.