Omron A3C Series Panel Mount Indicator, 12mm Mounting Hole Size

Each switch has two sets of SPST contacts, one normally open and one normally closed, permitting a wide variety of switching functions to be carried out
A complete assembly requires a switch unit (or indicator), a lens and a lamp, each of which must be ordered separately
The lenses contain a removable legend plate, which may be marked by the user
Lamps can be changed from front of panel
Matching indicators

UL, CSA

Cylindrical 12-dia. Series with Superb operability, High Visibility and Compact Housing

Three modules of pushbutton units (round, square, and rectangular), two types of light-emitting elements (LED and lamp), and two types of switch units (switching general-purpose and microcurrent/voltage loads) available
Models that can be used as an indicator also available
Requires only 20 mm mounting depth
Efficiency in wiring improved by terminals arranged on the same surface
All LEDs, lamps, lenses, and legends replaceable withouts tools

UL; CSA