What is the difference between a ZB4BW3* flush / ZB4BW1* extented and a ZB4BW3*3 / ZB4BW1*3?

Issue:
Difference between a ZB4BW3* flush / ZB4BW1* extented  and a ZB4BW3*3 / ZB4BW1*3?

Product Line:
Push Buttons and Operator Interface

Environment:
Harmony XB4/ZB4 Metal Push Buttons

Resolution:
ZB4BW3* uses a BA9 type full voltage light module.
ZB4BW3*3 uses a protected LED light module.

Released for:Schneider Electric Canada