This is Raypak 602101 Pool Heater PC Display Control Circuit Board 1134-800 1134-83-800 Rev A used part

This part was removed and inspected by professional installer from a fully functioning system in September (2021). Was in great working condition when removed.

In very good cosmetic condition as well.  Please see more details from the images attached. You will receive exactly the same part as pictured, or a very similar one. 

FREE USPS Priority mail delivery guaranteed.

My handling time is 1 business day only. But if I receive the money before 1 pm by Pacific Time very likely it will be shipped same day. 

Purchasing used parts you agree with the statement that sometimes hidden defects or malfunctions may occur during installation or continuous use. There is no warranty on used parts. 

 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.