Quadranorm Plus Optalloy plated brass housing IP67 Four switching status LEDs A setting LED to indicate optimum sensing range Operating temperature range -25 → +70°C 4mA No load current Short circuit, overload and reverse polarity protection M12 Plug in, for suitable 4 way connector see typically stock no. 488-003 Sensing Distance (mm) Stock no. Mild Steel Copper Aluminium Stainless Steel 335-6205 4 0.25 0.37 0.7 335-6479 7 0.4 0.47 0.7 335-6227 8 0.33 0.4 0.7 335-6485 12 0.4 0.5 0.7 335-6233 15 0.4 0.5 0.7 335-6491 22 0.42 0.48 0.72