... to export to East Asian 1.This 40*40mm voltage meter is main apply to the stabillizer2.Black ... so on40*40MM,55*48MM voltmeter are applicable to voltage stabilizer,voltage changer equipment and so on. These products main ... 40mm single diode meter A quality,40*40mm double diodes meter;55*48MM 0-300V voltage meter.We also ... can manufacture by the 40*40mm DC voltage meter (such as 12V,24V,36V,48V),40 ...