YOGU Ampere Meter 0-100A Digital, Ampere Meter Indicator,LED Signal Lamp, Ameter Lights Tester Measuring Range 0-100A AC, 31 mm Square (Red).It has a plastic bezel, this makes it ideal for applications requiring good resistance to chemical agents and/or double electrical insulation. It is designed to fit in a standard 22mm cutout, ensuring compatibility when installing in pre-existing machinery. Its wide range of operating temperatures from -40°C to 70°C allows versatility in usage of product.