A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation and looks for changes in the field or return signal. Specifications: Model Number: TL-N10ME1 Usage: Position Sensor Theory: Inductance Sensor Output: Switching Transducer Output mode: NPN NO Sensing distance: 10 mm Operating voltage: 6-36VDC Pre-wired: 2 m Specification: NPN NO Proximity Switch TL-N1ME1 Inductive Proximity Package Includes: 1 x Omron TL-N10ME1 Proximity Sensor