The USB-4232 is bi-directional which means it will not only convert from USB to 4 port RS232 but 4 port RS232 to USB. These USB to 4 Port RS232 converters feature (4) 9-pin DB9s for simple cable installation. Our converters are protected by a 5 year warranty and 30 day money back guarantee.
While variable speed air source heat pumps can be competitive with geothermal heat pumps in retrofit situations and smaller, better insulated buildings and less extreme climates, GHPs remain the most efficient way to heat and cool a building.
BETTER EFFICIENCY. Whirpoolâs most efficient dryer* offers you the opportunity to take the. next step in sustainability and energy efficiency with the DuetÂ® HybridCareâ¢. dryer. This new dryer uses true ventless heat pump technology to regenerate. energy during the drying cycle for greatly reduced energy consumption and. also provides the flexibility of an optional heater for faster drying.