Features:

LCD Display CO2 Current Meter for MYJG-100W &150W Power Supply Adjustable Current

Externally connected to the power supply of MYJG-100W &150W with network port through network cable, real-time display of processing current and information status. 

Turn this switch to the left: The LCD trimmer potentiometer does not work, and the LCD displays normally;

Turn this switch to the right: The LCD comes with a trimmer potentiometer to adjust the current;