F2TE 0.28" Digital DC 200V 10A Voltmeter Ammeter 4 Digit 5 Wire Voltage Current MeterOOTDTY  0.28 Inch Digital DC Voltmeter Ammeter 4 Bit 5 Wires DC 200V 10A Voltage Current Meter Power Supply Red Blue LED Dual DisplaySpecifications:High precision, four digital displayWorking voltage:DC4V-28VWorking current:Display: 0.28" Two color blue and redMeasuring range:DC 0-200V 0-10A Built-in shuntMeasure accuracy:Voltage: Range x 0.08%+Two digitsCurrent: Range x 0.08%+Two digitsRefresh rate: about 1S / 3timesOperating temperature: -10 to 65° cWorking pressure: 80 to 106 kPasize :48×29×20 mm About wiring: Red line thin: power supply+Red line (thick): IN+, current inputYellow line (thick):PW+, measuring terminal voltage input positivBlack line thick: COM, common measurin Package include:1x Digital DC Voltmeter Ammeter DC 200V 10A Voltage Current Meter Power Supply Red Blue LED Dual Display