The whisper-quiet and patented EE900M is used to transport condensate especially in noise-sensitive environments such as hotel rooms or bedrooms. Unlike conventional hose pumps, the tedious task of changing expensive hoses rendered obsolete since the EE900M operates on the principle of a reciprocating pump. The very slow movement of the piston produces sensationally quiet noise emissions. Regardless of the maximum pumping height, the pump delivers a constant pumping performance.