Using high purity silver point greatly increases the service life of button switch. Aluminum head, beautiful and generous oxidation resistance and strong water resistance. High quality PC fasteners, national standard thread, steady, clear screw lines, no slip wire. Rubber ring to play a fixed role, anti-corrosion and dust, 4 mm thicken cover. Ideal for control equipment switch, machine device accessories. Specification: Material: Plastic Color: Multicolor Size(LWH): Approx. 3.538 cm/1.381.183.15 inch Installation Dimension: 22 mm Rated Insulation Voltage: 400 V Working Voltage: 0~440 V Working Current: 10 A Rated Thermal Current: 10 A Contact resistance: 50 Insulation resistance: 100 M Using Temperature: -25~75 Package Includes: 1 Piece Button Switch Note: Please allow 0.5 mm error due to manual test, thank you.