Details74959 Control Panel HSS ORCA 74959.. A yellow or white sticker indicate that you have the Orca system. A blue sticker indicates that you have an eagle system. If you have a a digital topside control with a phone jack then you have the Orca system. Please check your serial number to verify. Electrical items are non-returnable. If you have the discontinued Orca 74959 then you will need to replace it with 76844 and 76836. If you have the Eagle system then you can order 76844 only.