This part is a kind of semiconductor called AQV210.

Function of this product has HIGH VOLTAGE/ PHOTO MOS RELAY.

Manufacturers : Etc

Image and pinout :

Some of the text within the PDF file :

AQV210 / AQV210A HIGH VOLTAGE, PHOTO MOS RELAY 65 Shark River Road, Neptune, New Jersey 07753-7423 Tel: 732-922-6333 Fax: 732-922-6363 E-Mail: globalcomponents@msn.com 65 Shark River Road, Neptune, New Jersey 07753-7423 Tel: 732-922-6333 Fax: 732-922-6363 E-Mail: globalcomponents@msn.com [ ... ]

AQV210 PDF Datasheet Download