This part is a kind of semiconductor called SYN450R.

Function of this product has 300-450MHz ASK Receiver.

Manufacturers : Synoxo

Image and pinout :

Some of the text within the PDF file :

Contents 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. General Description 1 Features 1 Applications . 1 Typical Application . 2 Ordering Information . 3 Pin Configuration . [ ... ]

SYN450R PDF Datasheet Download