Hearth & Home Technologies Replacement IPI Plus Control Module. It controls the ignition, flame and safety features of the appliance. This is an IPI control module; it does not work with DSI, HSI or standing pilot units.It is important to check the compatibility of this product with your specific hearth product before ordering; please consult the owner's manual. Restores hearth product to original operating condition. Item(s) must be in new condition, with all original accessories and in the original packaging. We are happy to assist you!