Ultrasonic Sensors (Reflex-Reflective, Block Style): Type - Inductive Proximity, Ferrous Metal Only Sensor; Sensing Range - 40 mm; Voltage - 10-30V DC; Output Mode - 150 Hz; Output Configuration - N.O. (NPN); Connection - Connector, 4-pin DC; Connection Size - M12x1; Construction - Square Style; Sensing Position - Side; Material - PBT; Enclosure Rating IEC - IEC IP67; Temperature Rating - -25 deg C (-13 deg F) 70 deg C (158 deg F); Additional Information - Sensing Face Material: PBT 4.72x4.72x0.03" (120x120x1mm); Manufacturer Series - E2Q5