The EE-SX1321 is an ultra-compact, transmissive photomicrosensor designed for surface-mount applications. It features a dual-channel phototransistor output and a 2 mm wide slot for object detection. The sensor offers high resolution with a narrow 1 x 0.3 mm detector aperture and operates with a peak emission wavelength of 940 nm. This surface-mount device (SMD) is ideal for PCB-level object detection in compact electronic equipment where precise positioning and dual-channel sensing are required.