RSL-LMB offers a bright, steady LED light with high optical performance. Its modular design and simple functionality combined with bright LED's, make this stack light option the right choice for an advanced application. RSL-LMB-F consists of a colored fresnel lens with a colored light source. The use of a colored lens with the same colored light source allows for optimization of the emission frequency, producing a rich intense light output. RSL-LMB-C consists of a clear lens with colored light source for use in very bright environments or outdoor applications.