This one is a thermo fluorescent lamp ment to be used in cold environment like freezer or outdoor. I guess this is some early production model from Luma as it's different than all the others I've seen. Basically, this is normal fluorescent lamp inside as there is no any extra designations on the etch (cw=cool white, LL=long life). Extra glass jacket has been used with white rubber-like seals at the ends.
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|Date added:||Jan 10, 2017|
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Nothing is better as the good old tungsten incandescent, fluorescent Tube T12 and the High pressure Mercury lamp without coating.
Pretty, please no more Chinese failure.