Features: 1NON CONTACT: When the sensing surface of the object proximity switch reaches the operating distance, no mechanical contact and application of any pressure are required. 2MULTIPLE USAGES: The proximity switch sensor can be used in automatic control system, used for limit, counting, position control and automatic protection, etc. 3SPECIFICATIONS: With the function of non contact travel switch, the action distance is 4mm, 2 wire normally open, with high repeated locationing accuracy. 4GOOD PROTECTION: The proximity switch shell is made of ABS and aluminum alloy, with IP65 protection grade, and supporting insulation resistance of more than 50M. 5WIDE APPLICATION: The inductive proximity sensor is widely used in machine tool, metallurgy, chemical industry, light textile, printing and other industries. Package included: 5 x Proximity Sensor