Authenic OEM Heatilator Eco-Choice PS35, PS50, and CAB50 pellet stove control box replacement. Replaces Part Numbers SRV7058-188 & SRV7058-172 Why Buy From Pellethead Established in 1991 during the inception of pellet stoves, our small business has since become industry experts. With USA-based tech support at your service, we emphasize that the strength of your warranty lies in the reliability of the company. Genuine OEM Heatilator Eco-Choice Replacement Control Box Circuit Board for the PS35, PS50 and CAB50. Heatilator Eco-Choice PS35, PS50, and CAB50 pellet stove control box replacement. This is a genuine HHT factory replacement control box, part number SRV7058-172, SRV7058-188. This is the newest style control box replacement and does come with instructions for installation and proper settings based on your model. This is a 120V AC control box; make sure your stove is unplugged from the wall when working with electrical components. We highly recommend a surge protector of 1000 Joules or higher to be in place between the outlet and stove cord. Please ensure you require a new circuit board/control board box prior to ordering; any questions please contact us.