It is a 2in1 Red/Blue Led Display Digital Voltmeter Ammeter, Measure Voltage range: 0.0~600V, Measure Current Range: +/- 0.0~99.9A, Measuring accuracy: 1%(+/-2 words), It has small size, high efficiency, long term stable and reliable quality,easy installation and use . Applications:Suitable for Auto,Electric bikes,motorcycles, LED lights, industrial equipment,electronic equipment measurement or other products voltage current measurement.