Four-digit Display & Mute Mode: The bright display allows you to work comfortably even in dim light. You can also set the beep sound at the time of setting to on or mute mode according to your needs.
Packaging and After-Sales: 1 x variable dc power supply, 1 x output power cord, 1 x input power cord, 1 x user manual. We provide 7 x 24 hours technical support.
Product Description
How do I turn off the key beep?
Press and hold the knob for a few seconds as shown to enable mute mode.
Why doesn't the power supply reach 30V?
If you are in an area where 110V is used, flip the voltage switch on the back of the power supply to 115V. Otherwise it may not reach 30V.