Feature: 1. Product Information: This photoelectric sensor integrates the functions of transmission and reception. After installation, the sensor is usable. 2. Convenient Use: The sensor features less interference from visible light, simple installation, and convenient use. 3. 2M Sensing Range: The sensor's sensing range is 2m, so pay attention to the range for a better user experience. 4. 5Pcs: The package contains 5 sensors, all of which are suitable for long term usage and replacement. 5. Wide Application: The sensor has a wide range of applications, including piece counting on production lines and robot obstacle avoidance. Specification: Item Type: Infrared Photoelectric Switch Mode: E18 R2NA Material: Aluminum Alloy Sensing Range: Approx. 2m / 6.6ft Product Voltage: 10-30V DC Maximum Current: 300mA NPN normally open Response Time: Less than 2m/20ms Pointing Angle: 3 °, - 10 °, - 20 ° Working Environment Temperature: - 25 to +55 ℃ Protection Grade: IP54 Standard Test Object: Sunlight below 10000LX, incandescent lamp below 3000LX Operating Principle of Photoelectric Switch: Photoelectric switch is also called photoelectric sensor. The sensors are divided into diffuse reflection type, feedback reflection type and opposite reflection type. They are used together with PLC programmable controller, single chip microcomputer, 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 x Infrared Photoelectric Switch