RioRand Small Digital LED Voltmeter Amperemeter 2in1 DC 0-300V/0-300A Voltage Current Meter

Features:
Dual LED: Red voltage, Blue current, Display Voltage Current on one screen this panel meter is common ground design, it means that the (measure ground wire) and (power supply ground) is common ground.
Power Supply DC 4.5-30V. With reverse polarity protection, but the max power supply can not exceed 30VDC.
Specific:
Power Supply: DC 4.5-30V Measure Voltage: DC 0-300V
voltage < 100V, resolution: 0.1V
voltage >= 100V, resolution: 1V
Measure Current: 0-200A forward current (this ammeter need an extra 200A shunt for measuring current, please check the description picture for connection reference)
Current Resolution: 0.1A
Operating Current: ;20mA Display: 0.28" LED, Dual Color, Red and Blue
Dimensions: 48 x 29 x 21 mm
Cutting Size: 45 x 26 mm
Measurement rate: ≥ 500mS / times
Accuracy: 1% (± 1 digit)
Operating Temperature: -10°c ~ +65°c
Operating Humidity: 10 ~ 80% (non-condensing)
Working pressure: 80 ~ 106kPa
Wire Connection, please check the description picture.
Power supply (two line socket):
Red wire: Power Supply +;
Black wire: Power Supply -
the power supply voltage can not exceed 30V
Measure Port (three line socket)
Package Include:
1x 2in1 Voltmeter/Ammeter (This item do not include shunt)