for switch with indicator light ref.-no.: 502 KOU, 503 KOU, 506 KOU, 501-20 KOU, 502-20 KOU, 506-20 KOU
for push-button ref.-no.: 531 U, 533 U, 533-2 U, 534 U
For improved visibility use frame in contrasting black colour.
Duroplastic lacquered
Spare part:
holder plate ref.-no.: AS 90 HP