FISHER & PAYKEL HEATER WIRE ADAPTOR FOR HEATED BREATHING CIRCUITS 900MR805 The heater-wire adapter for the F&P 850 System powers the inspiratory and expiratory limbs, heating the water vapor inside to remain above its dew point temperature. This heating reduces condensation from forming in the breathing circuit. The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item. Return Policy 30 Day Return Policy. Customer must pay the return shipping costs when returning a product. We are accept return within 30-days from the purchase,