This is HONEYWELL ST9120C4040 HQ1011179HW Furnace Control Circuit Board  used part. 

This part was removed by HVAC installer from a fully functioning system. Part has been inspected by professional and was in working condition when removed.

Please see more details from the images attached. 

Please learn the images carefully, you will not receive the same item as pictured but a similar one. Please be informed. 

We have more than one item in this listing, so we do not offer this boards "same as pictured".

FREE USPS First Class mail delivery guaranteed.

You can choose also USPS Priority mail delivery 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. There is no long-term warranty on used parts. But you have 30 days FREE return option.

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.