... 10mm 26years factory experience shape:mushroom,plain,round,suqare signal lamp; indicator lamp, warning light Specifications:Contact Rating3A, 250V ACContact Resistance ≤50m ... &momentaryPushbutton Headround, mushroom, square, rectangular big square, big rectangularCap Colorsred, green, yellow, white, blueInput Voltage of Lampneon lamp 110V, 220V LED 2V,6V ...