Inductive Cylindrical Proximity Sensor, Inductive, 18 mm, Proximity Sensor Power Requirement 6 to 48V DC, Unshielded, Proximity Sensor Operating Frequency 500 Hz, Proximity Sensor Output Circuit Type 3 Wire NPN, Max. Detecting Distance 20 mm, Proximity Sensor Electrical Connection 4 Pin Micro DC Connector, Output Mode NC, NEMA Rating 12, 13, 4, 4X, 6, 6P, IP Rating IP67, IP69K, Case Material 303 Stainless Steel, Length 69 mm, Operating Temp. Range -13 Degrees to 158 Degrees F