NP8
Application:	      built-in push-buttons and indicator lights Φ 22mm
Types:		      push type, rotary, mushroom, lockable, illuminated and 
                              non illuminated, with or without return (in complete sets)
Nominal voltage:   24V AC/DC, 110 ~ 230V AC
Colors:		      green, red, white, blue, yellow, black
Standard:	      IEC/EN 60947-5-1