1,LED+Locking Push button switch 2,buttons color :red,blue, yellow,as your like 3,LED 2V and 3V R16-503 Illuminated push button switch 4 function1, 2P locking2,2P w/o locking3,4P with LED and locking4\4P Led and w/o lockingRed , Yellow Led light: 2VBlue, Green, White Led light: 3VTECHNICAL PARAMETER DIMENSION