Test terminal: three-wire terminal
COM (black line): test common terminal (COM is the common negative pole of the voltmeter and ammeter)
V+ (red wire): test positive voltage input
A+ (yellow line): Test positive current input. It can only be connected to the negative pole of the load and the negative pole of the load power supply, as shown below:
For "10A or less", no shunt required:
Dimensions: 48x29x21mm
Working temperature: -10~+50 degrees
Supply voltage: DC3.5-30V
Accuracy grade: 1% +/- 2 digits
Model: YB27VA
Display Type: Numbers only
Display mode: 0.28'' LED, red and blue digital
Test voltage: DC3.5-30V
Shunt: built-in shunt
Test current: DC10A
Features: Three lines