The opposite photoelectric switch consists of a transmitter and a receiver, which are placed on two sides and installed oppositely. The light beam emitted by the transmitter is aimed directly at the receiver. When an object blocks the light beam, the signal of the receiver changes, thus detecting the object. It has long detection distance, high precision and good stability.

Application: conveyor belt object detection, such as package counting in logistics industry; In the automatic production line, it is used to detect whether the workpiece passes through the designated position; It is also used for perimeter protection in security field, such as fence intrusion detection.