solar-lighted doorplate plaque features with a built-in rechargeable environment-friendly battery. The Amorphous silicone light sensor solar panels has perfect capacity of solar power collection. Therefore, it can automatically charge itself in the day time and illuminates at dusk. offer bright enough cool white light, making your address numbers more visible in the darkness. It helps your visitors,emergency vehicles and parcel deliverers find your house at night. IP44 Waterproof Suitable for OutdoorThe stainless steel holds up to the IP44 waterproof standard and provides complete protection from water,heat,frost, dust, oil, and other non-corrosive material.The sleek roof-liked also protect this plaque address form being damaged by water.It would be resistance to rainy days, windy days,snowy days and other weather condition. Included 3 Sets Numbers&26 LettersIt comes with 3 sets of numbers (0-9) and one set of letters ,which enables you to DIY the doorplate according to your preference. Easy InstallationNo wiring is required and it comes with a built-in battery and two screws.It could be mounted on the wall, the mail box,fence,etc. Clicked the on/off button,use a screwdriver to fix the screws/nails (come in the packages)in the wooden stake/wall,then hang the address marker by putting the two slots in the back of the main units into the screws.