General specifications Switching element function NPN NO/NC Rated operating distance 40 mm Installation non-flush Output polarity DC Assured operating distance 0 ... 32.4 mm Reduction factor r Al 0.34 Reduction factor r Cu 0.3 Reduction factor r 304 0.81 Reduction factor r St37 1 Reduction factor r Brass 0.4 Nominal ratings Operating voltage 10 ... 60 V DC Switching frequency 0 ... 150 Hz Hysteresis typ. 5 % Reverse polarity protection reverse polarity protected Short-circuit protection pulsing Voltage drop less than or equal to 2 V Operating current 0 ... 200 mA Off-state current 0 ... 0.5 mA No-load supply current less than or equal to 20 mA Operating voltage indicator LED, green Switching state indicator LED, yellow Functional safety related parameters MTTF d 670 a Mission Time (T M ) 20 a Diagnostic Coverage (DC) 0 % Approvals and certificates UL approval cULus Listed, General Purpose CSA approval cCSAus Listed, General Purpose CCC approval Certified by China Compulsory Certification (CCC) e1 Type approval 2006/28/EG Ambient conditions Ambient temperature -40 ... 85 °C (-40 ... 185 °F) Mechanical specifications Connection type Connector M12 x 1 , 4-pin Housing material PA-GF35 metal base powder coated metal mounting flang powder coated. Sensing face PA-GF35 Housing diameter Degree of protection IP69K Mass 130 g