? The touch screen control box based on PLC control and the control box controlled by pure relay are commonly used equipment in the air-conditioning refrigeration system of ships.

1. The relay control system can be read from the display:

--Air temperature

--Air humidity

--Compressor oil pressure and suction and discharge pressure

- Running time of compressor and fan motor

2. The PLC control system can realize:

--Collect the temperature of each point

--Start and stop of fan motor

--Humidity control

- Heating system control

--Compressor start and stop control

--Compressor can be adjusted and controlled

--Remote start and stop (optional)

--Network communication (optional)