Illuminated. Can also be used as a 1-pole off control switch. Can be used as a heating emergency switch with the enclosed label insert. Properties - Front-facing retrofitting of lighting modules without removing the switch. Front-facing measuring and test contacts, accessible without removing the switch. Surface-mounted installation. With plug-in terminals. Protection class IP 44. Dimensions approx. 83x73x56 mm. Accessories LED light pendant, AC 100-230 V AQUASTAR MEG3901-8006. LED light pendant, AC/DC 8-32 V AQUASTAR MEG3922-8006. LED linear lighting, AC 100-230 V AQUASTAR MEG3903-8000. Label inserts AQUASTAR MEG3957-8000. Double inlet AQUASTAR MEG3961-80xx Connector AQUASTAR MEG3963-80xx Pipe inlet AQUASTAR MEG3964-8029. Duct inlet AQUASTAR MEG3965-80xx Slide with nozzle AQUASTAR MEG3962-8029. Scope of delivery With LED light pendant MEG3901-8006. With label field insert. Color light gray.