Features: brand new and high quality This is a normally close proximity switch sensor. Proximity sensor can detect objects and control on and off of switches in various environments. When proximity switch is close to some target object, inductive sensor will send out control signal. Proximity sensor switch is a component widely used in automatic control industry for detecting, controlling, and non-contact switching. High sensitivity, quick-response, stable performance. After the circuit is powered off, it can be used after connecting the switch and powering on it Non-contact detection avoids the sensor and the target object from damages. The structure of proximity switch kit is small and compacts, reducing the size of the product and easy to install. Specifications: Material:Plastic Model:TL-Q5MC2-Z Size:Approx.17x28mm/0.67x1.1inches Package Includes: 1x Proximity Switch note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.