1.1 Real-time display of pressure, current and voltage. 1.2 Real-time monitoring of over-voltage, under-voltage and over-current. Abnormal immediately alarm and display the corresponding error code. 1.3 Automatic drainage reminder. 1.4 Record running time. 1.5 Two standard operating voltage(220V/110V) can be free to switch. 1.6 Two pressure units(Bar/Psi) can be free to switch. CYD-D1 Max pressure10Bar Max power220V->2.2KW 110V->1.1KW CYD-A1-1 Max pressure12.5Bar Max power220V->2.2KW 110V->1.1KW CYD-A1-2 Max pressure12.5Bar Max power220V->3.0KW 110V->1.5KW