*Supply chilled water / domestic hot water or bothh;
* Support chilled water protection and heating water protection;
* Support probe lost protection and off memory function;
* Support anti-freeze and auxiliary heater function;
* Strong stability, 0.15-80MHz interference rejection, 4KV high voltage and surge resistance;
* SMT technology, 48 hours burn-in test for ensuring quality;
* Humidifier dividual control, high humidity accuracy, with protection for cylinder;
* MODBUS-RTU RS485 widely-used communication protocol, up to 1km max distance (Gateway Free);
* PCB surface painted with CRC, avoid leakage, short circuit, and erosion from acid / alkali/alcohol/humidity/salt spray;
* Wide voltage range, avoid misoperation caused by voltage fluctuation;
* All I/O on control board fixed with indicator lights for intuitionistic estimation. Control logic implemented on the control   board;
* Feature with European terminal blocks for I/O connection, easy assemble.