Based on this product's specifications, here are some alternatives and similar models
Photoelectric Sensor Datalogic S50-MA-5-C21-PP
Summary description:
The Datalogic S50-MA-5-C21-PP is a robust photoelectric sensor made of brass and metal, featuring a frequency of 1 kHz and an IP67 rating for dust and water resistance. Weighing only 60 g, it is ideal for various industrial applications, ensuring reliable performance in harsh environments.