1.brand:kenaida 2.Name:square head button 3.Certificate:CE,ISO9000 4.protection level:IP40,IP65 ... for momentary Mechanical Configuration:latching&momentaryPushbutton Headround, mushroom, square, rectangular big square, big rectangularCap Colorsred, green, yellow, white, blueInput Voltage of Lampneon ... -return button,selector button500000emergency stop button , key button 100000 square head button