sensor Photoelectric switch is the use of the test object to blocked or reflected beam by the synchronization loop gating circuit to detect the presence or absence of the object. All objects can reflect light can be detected. With delay broadening external synchronization anti-interference high reliability working for regional stability and self-diagno Photoelectric Switch can be used for detection distance and anti-light electricity magnetic interference capability advantages. Small size multi-function long life high precision fast response Product Question Please contact us and we will get back to you within 24 hours. We look forward to and appreciate your trust!