The GL20537 is a high quality photoresistor manufactured by the Jing Chuang company. It has excellent resistance and voltage characteristics and is designed for use in high-performance applications. The photoresistor is housed in a RoHS-compliant through-hole package, making it suitable for use in a variety of electronic applications. It has an adjustable on/off resistance, allowing it to be used in a wide range of detector circuits, such as light sensing, motion detection, and infrared detection. Furthermore, it is well-suited for use in automotive, aerospace, and other demanding environments. Its built-in reverse bias protection ensures a long and reliable service life.