... -55° Driving mode Internal Application bulding,brideges,park,squares. grb led wall washer features:1, Lamp shells of high-quality aluminum ... .3,Lamp light source of imported high-power ultra-bright LED lamp beads, built constant currentpower supply, stable performance to ensure ... power Control System1:There are two driving mode on our LED wall washers:Internal and External. 2,with DMX512 controllers can ...