Carlo Gavazzi Photoelectric Sensor Diffuse Reflective, M18 Nickel Plated Brass Housing, Adjustable 400mm, SCR NC Switching, M12 Plug, 20-250VAC. Diffuse-reflective photoelectric switch with extended range up to 400 mm. Easily adjustable sensitivity with 270° potentiometer. LED output indication. Short M 18 metal housing for heavy duty applications. IP 67. Easy mounting. DC and AC types, fully protected. Cable and plug versions. Option: fibre optics.