The 1.69.507.105/1601 is a panel-mount signal indicator with an integrated filament lamp. It operates at a maximum voltage of 28V with a power rating of 1.2W. This indicator is designed for press-fit mounting into a 10 mm diameter panel cutout and features a transparent blue round lens. Electrical connection is made via 2.8 x 0.8 mm tin-plated quick connectors, and it offers an operating life of 10,000 hours with an IP40 protection rating from the front.