digital square led ac voltometer signal lights volt ampere current meter

100% new and characteristics: made of material, solid, durable and good performance. professional designed 3-in-1 voltmeter for displaying ac voltage and current at the same time, improving work efficiency. it is digital voltage test signal indicator, high brightness led display and cylindrical main body. it can be used as signal indication, warning signal, accident signal and other signals in the line of electrical energy, telecommunication, machine tool etc. sma