It is a 2in1 Volt Amp Panel Meter, Measure Voltage Range DC 0-300V,Measure Current Range 0-2A 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.