Features: 1.Strong Compability: The control board is compatible with Atwood Dometic 91504, 91420, 91606, please confirm whether your model is applicable before buying. 2.Replace Number: The manufacturer number for reference is 91504, please confirm whether it is consistent with the number you need. 3.Upgraded Design: The control circuit board adopts advanced design and intelligent management to improve the use experience. 4.Strong Stability: Ignition control board adopts excellent electronic components, SMT technology, PCB files to ensure the stability of product performance. 5.High Standard: Circuit board replacement adopts OEM production standard, which can be perfectly adapted to RV water heater circuit board replacement. Specification: Item Type: RV Water Heater Control Board_x000D_ Material: ABS, Metal_x000D_ Manufacturer Number: 91504_x000D_ Compability:_x000D_ _x000D_ Compatible with Atwood Dometic 91504, 91420, 91606_x000D_ Replaces for MPD 93307, 91420 Note: 1. Please double check the part number of your item, matching information is forreference only._x000D_ 2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!