Single key for switching between auto and manual mode.

Additional left key for adjusting the number, making parameter settings faster and handier.

Displaying output percentage for the user to acquire the openness of the valve immediately.

Control methods are designed entirely for the features of electronic valve.

DTV have two groups of alarm outputs with 17 modes, for more choices of applications.

The RS-485 interface allows collecting data from many devices through network on-line monitoring.