Rectangular BLUE 12vdc 20ma LED Annunciator Light with a 0.565″ x 0.721″ bezel.
This Light mounts in a 12mm or 15/32″ round hole.
The Light has a pair of solder type connections on the back side.
Note: Like most LED lights this unit is polarity sensitive,
if it does not light up just swap it’s connections.
The cap can be removed to insert a 0.393″ x 0.548″ legend/label. Printed text on copy paper works fine. Another option is to use transparency film.