... pushbutton switch Bright and Variable Illumination EHA-4 Mulon Miniature Lighted Pushbutton Switch EHA-3illuminated pushbutton switchBright and Variable Illumination makes ... behind panel : Only 22.5mm built-in resistorAccessories: Barriers, Guard Covers, Sockets, etc.Japan UNMULON pushbutton switchpushbutton LEDEHA-4 3A 125V ... 4mm 5V,12V,24V.22.5mm EHA-4 Mulon Miniature Lighted Pushbutton Switch EHA-3