This is a document about the EE-SX1137 micro photoelectric sensor. The sensor is a through-beam type photoelectric sensor with high resolution and universal features. It has various electrical and optical characteristics, including forward voltage on the emission side, reverse current, photocurrent on the reception side, dark current, etc. The sensor has dimensions of 13.7mm x 5mm x 2.5mm and specific terminal markings. Additionally, the document provides the absolute maximum ratings and characteristic curves of the sensor.