It is a 2in1 Volt Amp Panel Meter, Measure Voltage Range DC 0-300V,Measure Current Range 0-300A forward current , Accuracy: 1% (± 1 digit ),It has Reverse polarity protection, small size, high efficiency, long term stable and reliable quality,easy installation and use . Applications:Suitable for automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement.

Features:

• Dual LED: Red voltage, Blue current, Display Voltage Current at same time
• 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: 0-300A forward current ( this ammeter need extra 300A/75mv 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
• Applications:Suitable for industrial equipments/electronic equipment/automotive/electric cars/motorcycles battery monitoring or other products voltage current measurement.

Wire Connection, please check the description pictures.
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)

• COM: Black wire, measure common ground
• PW+: Red wire, Measure Voltage +
• IN+, Yellow wire, Measure current input. if use the voltmeter function only, please connect the Yellow wire and black wire together to avoid the Interference

Package Include:

• 1x 2in1 Voltmeter/Ammeter ( This item do not include shunt )