This Generac generator controller is a direct replacement for older versions of the Generac Evolution controller, including the Generac 0J8371A, 0J8371ASRV, 0J8371AHSRV, 0J8371B, 0J8371BSRV, 0J8371BHSRV, and 0J9079A models. Key Features: OEM Generac Control Board Plug and play ready Quality Construction: Precisely built to deliver you with maximum durability using hard-wearing materials, providing you with a reliable product to last over time Generator Compatibility: Built to support most Generac RV and home generators and designed to extend your engine and power performance This is not the Wi-Fi-friendly version of the controller, and you must purchase the same version of the control board that was originally installed in your generator If you experience a “2800 Auxiliary Shutdown" error after installing this control board, that means you have one or both AUX switches in the off position