This is SOURCE 1 031-01958-000 1151-83-21-SS01A Control Board  used part. 

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

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

Please check images carefully because you will receive exactly the item pictured, or a very similar one. 

FREE USPS First Class mail delivery guaranteed.

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.