DROK 0.28 Inch LED DC 0-100V 10A Digital Voltmeter Ammeter 2in1 Multimeter 12V 24V Voltage Amperage Meter with Red Blue Dual Color Display and Build-in Shunt for Car Auto Boat Battery Monitoring

Features:
Operating voltage:DC 4.5 - 30V
Measure voltage: DC 0 - 100V
Minimum resolution(V): 0.1V
Measure current :10A (measure directly,built-in shunt)
Minimum resolution(A): 0.01A
Operating current:
Dimensions: 48 x 29 x 21mm
Mounting cutout: 45.5 x 26.5mm
Refresh rate: about 500mS / times
Measure accuracy: 1% (± 1 digit)
Operating temperature: -10 to 65° c
Operating Humidity: 10 to 80% (non-condensing)

Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement
Wiring: Black line (thin): vacant or buck circuit (module) negative
Red line (thin): power supply+ Black line (thick): COM, common measuring
Red line (thick): PW+, measuring terminal voltage input positive
Yellow line (thick): IN+, current input+ (Please refer to the wiring diagrams for more details)

Notice: The voltage between the thin red and thin black lines must be within DC 4.5-30V
The ammeter can only be connected to the negative of the device under test 10A below ammeter (include 10A), built-in shunt, does not require external shunt
When the black thin line vacant, it is better to use insulating tape around the exposed part of the wire, to prevent short circuits If just be used as a voltmeter, it is recommended that the yellow line and the black line were connected together, to prevent the ammeter digital flashing

Package include: 1x Digital Volt Ampere Meter