Specification Brand : Walfront BulletPoint : PHOTOCONTROL BulletPoint1 : This is a set of transmitter and receiver in one of the photoelectric sensor BulletPoint2 : This is a set of transmitter and receiver in one of the photoelectric sensor BulletPoint3 : The optimal sensing distance is within 50cm (20 inches). BulletPoint4 : A detection distance can be adjusted according to the requirements BulletPoint5 : The sensor has a detection distance, visible interference by small, easy to assemble, easy to use Color : Color ConnectivityProtocol : Infrared ConnectorType : Spade ControlMethod : remote CurrentRating : 100 milliamps CustomerPackageType : Standard Packaging ExternallyAssignedProductIdentifier1 : 741870388491 ExternallyAssignedProductIdentifier2 : 0741870388491 ExternallyAssignedProductIdentifier3 : 00078275512214 IncludedComponents : K1221 InternationalProtectionRating : IP54 ItemName : Adjustable Infrared Photoelectric Proximity Switch Normally Open Obstacle Avoidance Sensor Module for Smart Car/Robot Obstacle Avoidance/Line Piece and Many ItemPackageDimensions_Height : 29.8 centimeters ItemPackageDimensions_Length : 5.8 centimeters ItemPackageDimensions_Width : 24.9 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : electronic-component-photoelectric-sensors Manufacturer : Walfront Material : Metal ModelName : K1221 ModelNumber : K1221 MountingType : Plug In Mount NumberOfBoxes : 1 NumberOfItems : 1 OperatingVoltage : 5 volts OperationMode : ON-OFF PartNumber : Walfrontt2ke4b3ndc ProductDescription : The infrared proximity switch uses the object to block or reflect the beam, and the circuit is strobed by the synchronous circuit to detect the or absence of the object. Objects are not limited to metal, and all objects that reflect light can be detected. The photoelectric switch converts the input current into an optical on the transmitter, and the receiver then detects the target object according to the received light or or absence. The photoelectric switch is common in security systems is often used in the industry to count the number of movements of the robot arm.