This is a small volt and current meter that you can connect to your power source and device/load to keep an eye on the status of your device. 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 an external shunt When the black thin line is vacant, it is better to use insulating tape around the exposed part of the wire, to prevent short circuits If just being used as a voltmeter, it is recommended that the yellow line and the black line were connected together, to prevent the ammeter digital flashing
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: <20mA
Display colour: Red and Blue (two-colour display)
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)
Display: 0.28" LED digital. Two colors blue and red