O.T Light Halogen Lamp Reflector system, Depth of tubular light beams up to over 600mm Average service life up to 1500 hours O.T Light Halogen Lamp TRSL-6001. Reflector system, color temperature close to that of sunlight, depth of tubular light beams up to over 600mm.2. Special heat isolated radiation filter reduces heat to the minimum level.3. Light adjustment circuit adopts CPU control, and the ...