Water resistant flush program WU 500 WU Characteristic of the 500 series is the use of shatter-proof material. Illuminated in accordance with the workplace ordinance by lamps 95-97, seesaws in lighter colors have sufficient transparency. With paddles darker color use KO version. With sealing gasket 551 WU 581 WU and CD Cover ... - CD 583 WU ... use. Only the degree of protection IP 44 is ensured. Colours: white (similar to RAL 1013) alpine white (similar to RAL 9010) Brown (similar to RAL 8033), gray (similar to RAL 7038) sealing flange CD universal for all flush-mounted switch and button for the 500 series, for dimmer with pressure switch, shutter speed switches, sockets, switches, light signals, automatic switches, devices with cover 50 x 50 mm Type: 551WU sales unit: 1 unit.