MV500 protective barrel glass degree of protection IP67 for MV500 devices face plate: glass enclosure: metal for lens length without/with built-in ring light 48.5 mm/23.9 mm For lens width without/with built-in ring light 60.4 mm/41.6 mm Suitable for lenses (MLFB): 6GF9001-1BL01 - Siemens | JRB