DC 5V-30V Voltage Current Power Meter Red Blue 10A LED Display Digital Voltmeter Ammeter on-Board Shunt Resistor Test DC 0V-100V

Operating Voltage:
The working voltage of the instrument is DC 5~30V, and 5~12V is recommended.
The thin red wire is the positive pole of the working power supply, and the thin black wire is the negative pole of the working power supply, which belongs to the common ground with the thick black wire; the limit voltage connected to the thin red and black wire cannot exceed 24V, and 12V power supply is recommended.

Measuring range:
The voltage measurement range is 0~100V, the display mode below 10V is 0.0V, the voltage starts at 0.1V, the error range is ±1V, the current measurement range is 0~10A, the current starts at 0.03A, and the error starts at ±3%

Shunt Resistor:
On-board shunt resistor, no need for external shunt, just use it directly according to the wiring diagram
The shunt resistance is connected in parallel with the current test line, and the no-load test will cause a short circuit alarm. When using, connect the thick red line to the negative pole of the load according to the wiring diagram for normal use.

Standard wire:
XH-2.54-3P red, black and yellow wire (total length of thin wire: 155mm)
Thin red wire: positive pole of the working power supply, can not be connected to a power supply above 30V
Thin black wire: the negative pole of the working power supply, and the thick black wire on the construction site, do not need to be connected when sharing the power supply
Thin yellow wire: voltage test wire, connected to the positive pole of the test circuit power supply

VH-3.96-2P red and black wire (thick wire total length: 165mm) current test wire
Thick red wire: the positive pole of the current test, which is connected to the negative pole of the load.
Thick black wire: current test negative pole, connect to power supply negative pole, connect first and then break when disconnected

Voltage display fine-tuning:
It is a display fine adjustment, not a major adjustment, the adjustment is the display voltage, but the actual voltage cannot be adjusted!
See the round adjustable resistor of V-ADJ, find a flat-blade screwdriver and twist it!

No-load current does not return to zero
Neither does this feature!

Display power:
Real-time power will alternate with current (about 10 seconds alternate)