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.
Designed and manufactured to assure the most efficient combustion of solid fuels, while maintaining low emissions. The Blue Flame Stoker is a commmercial size heating system and steam generation unit designed to burn biomass, wood or coal and produce up to 25 Million Btu per hour.