I will try to search at the Sim Lim Tower tomorrow.
Thank you very much nb8686!...

Thank you for prompt and comprehensive explanation! I am very appreciated.
Can I buy it from somewhere already assembled to save time? What is the the name of this thing?
Thanks....

Good morning everybody!
I am newbie and just started learning about electronics and soldering.
I would be greatly appreciated if some one knowledgeable can help me identify electronic part I need for my project.
It supposed to be a 15Hz pulse or frequency generator (I am not sure)....