Outdoor Solar House Number 1 LED 0.2W with Replaceable Battery in Black. These wall mounted contemporary lights are modern lighting exclusive to Harbour Lifestyle. The illuminated number 1 can be used on its own or combined with other digits to form the perfect house number luminaire. Being solar-powered, it can be mounted on the house wall completely independently of the power outlet. During the day, the invisible solar panel is charged by sunlight, at night the decorative number is indirectly illuminated.