Part DetailsManufacturer: Zodiac / Jandy / LaarsPart Number (SKU): R0097100Product Description: Ignition Control,Natural gas and  LP (Liquid Propane) Replacement KitCompatible Models: Used on Jandy/Laars Lite2 pool and spa heater models ESC 125 through ESC 400.Handwritten Note: The name "Honeywell" is handwritten on the box, indicating that this specific electronic control module was originally manufactured by Honeywell for Zodiac/Jandy systems.