With mechanical reversing lock and electrical locking. Features - Prepared for retrofitting QuickFlex lighting modules on the front. Measuring and test contacts on the front without dismantling the switch. Has quick-thread screws for claw fastening. Countersunk claws with return spring. High-gloss galvanized support ring insulated from the claw. With claw and screw fastening. With plug-in terminals. To be completed with rocker for roller shutter switches and buttons System M 4324xx, 4355xx, 4344xx, System Design MEG3855-60xx, System Area 4115xx, AQUADESIGN 3434xx version 10 A, AC 250 V. Cradle to Cradle CertifiedTM.