This is Honeywell ST9120U1011 Electronic Universal Fan Timer Control Circuit Board used part. 

Removed by professional HVAC installer from a fully functioning system. The part has been inspected by professional HVAC installer. 

In excellent cosmetic condition.  Please see more details from the images attached.

You will receive exactly the same item as pictured, or a very similar one.

FREE USPS First Class mail delivery guaranteed.

You can choose USPS Priority mail for additional price.

My handling time is 1 business day only. 

Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. 

But you have 30 days satisfaction guarantee and 30 days FREE returns!

 Most of the parts require specific knowledge and skills to be installed properly. If you don’t have skills or knowledge, you must ask certified HVAC technician to install. I am not liable for any damages or failures as a result of improper installation.