Vktech&reg; YB27A LED AC 60-500V Digital Voltmeter Home Use Voltage Display w/ 2 Wires (Green) Measuring Range: AC60-500V LED digit: 0.56" digit Min resolution: 1V ,Accuracy: 1% ,Input impedance: &gt;1M Measuring speed: 2 times/S ,Working pressure: 80~106kPa Wire length: 150MM , Product Size: 482921 mm