Signals Lamps : 

X Koren Electric Signal Lamps are a signal or wave that carries information or commands in electrical or electromagnetic form. They are used for information transmission and control in electronic systems. 

22mm; 24V/110V/220V, AC/DC signal with red, green, yellow, white, blue LEDs
16mm; 24V/110V/220V, AC/DC signal with red, green, yellow, white, blue LEDs
10mm; 24V & 220V, AC/DC, red, green, yellow, white, yellow, white, blue luminous signal
22mm; voltmeter/ammeter with red, green, yellow, white, blue LEDs
22mm; 24V &220V AC/DC LED flasher buzzer with red sound alert 

Buttons: 

X Koren Electric Push buttons are simple control devices used to start or stop a specific operation in electronic or mechanical systems. They are rotated by the user.
22mm; red, green, yellow spring buttons
Twin button
40mm; permanent mushroom button 

Permanent latch button
600V emergency stop button
600V 2-3 positions, short-long, latch button
600V start-stop button with LED
600V 2-3 positions, push button with switch
600V mushroom pushbutton with / without LED
600V Flash button with / without LED
12mm; 250V metal push button
16mm; 250V metal pushbutton with / without LED
19mm; 250V button with LED