Part Number : SY-52PT
Function : 3mm Photo Transistor
Maker : Shian Yih Electronic
Pinouts : 
Description :
Application
1. Optical swtich
2. Photo Sensors
3. Strobo
4. Game Manchine
5. Sensor Toy
6. Smoke Detector
http://www.datasheet-pdf.com/datasheet-html/S/Y/3/SY32PT_ShianYihElectronic.pdf.html
Datasheet PDF Download : 
Others datasheet of same file :
SY-10PT, SY-12PT, SY-15PT, SY-30PT, SY-32PT
