Suitable for luminous sources (normal double-feet illuminaiting lamp): 2*40W, 1*40W, 2*30W, 1*30W, 2*20W, ... atmoshere.3. Suitable for luminous sources (normal double-feet illuminaiting lamp): 2×40W, 1×40W, 2×30W, 1×30W, 2×20W ... . Diecasted aluminum alloy shell with plastic-sprayed surface.2. Changing lamp tube must twist end cover.3. Wiring by cable or ...