Feature:1. Photoelectric Sensors: This is a photoelectric sensor integrating transmission and reception, higher in both accuracy and efficiency.2. Sense Range Adjusting: The sensing range is adjustable from 5cm to 30cm, which also ensures less interference from the visible light.3. Better in Application: Can be widely applied to robot obstacle avoidance, assembly line piece counting, automatic products and so on.4. 5Pcs Infrared Sensors: There are 5pcs NPN normally open infrared sensor module in the set, and the large quantity will meet your needs.5. Convenient to Install: Comes with a compact size and a light weight as well, the convenient installation can be quickly completed.Specification:Item Type: Infrared Sensor ModuleModel: E18-5DC4Material: ABSSensing Range: Approx. 5 ~ 30cm / 1.97 ~ 11.81in, adjustable. Product Voltage: 10-36V DCMaximum Current: 300mA NPN normally open. Response Time: <2m/20msPointing Angle: 3, -10, -20. Working Environment Temperature: -25 ~ +55Protection Grade: IP54Standard Test Object: Sunlight below 10000LM, incandescent lamp below 3000LM. Operating Principle of The Photoelectric Switch: The photoelectric switch is also called photoelectric sensor. The sensor can use together with PLC programmable controller, single chip computer, non gate circuit electronic counter, solid state relay, small relay and other products. The transmitting type aiming target uninterrupted transmitting beam receiver converts the received optical energy into current and transmits it to the following detection line, which can filter out the effective signal and apply the signal. .Package List:5 xInfrared Sensor Module