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.
American Standard's most efficient single-stage heat pump. Surpasses government efficiency standards, helping you save up to 50% on your energy bills while reducing greenhouse gas emissions. Keeps operating noise to a minimum, even in extreme temperatures.Provides more efficient and reliable cooling, thanks to its single-row Spine Finâ¢ coil and durable Durationâ¢ compressor. Rust-resistant coating, screws and basepan protect system from the elements.Available in five different models (varying capacities, dimensions, and efficiencies).eeps operating noise to a minimum, even in extreme temperatures. Provides more efficient and reliable cooling, thanks to its single-row Spine Finâ¢ coil and durable Durationâ¢ compressor. Rust-resistant coating, screws and basepan protect system from the elements.