Dual Digital Voltmeter Ammeter (100V/10A DC)

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