Colors available: red, amber, green, blue, and clear Lenses are made of heat and shock resistant polycarbonate resin. Special high intensity light design. Rust and corrosion proof anodized aluminum tower body. Can be mounted on a flat surface with a single hole. PNP open collecter version is available by special order. (min. 5pcs. per order) Longer body size: 500mm MEL Standard body size: 200mm ME Shorter body size: 40mm MES Protection against solid objects larger than Ø 1mm. Protection against dripping water when tilted up to 15°. Aluminum body, open-collector NPN only, pre-assembled/pre-wired.