Housing differences: The FC-2001S uses a plastic housing, while the FC-2001A and FC-100A feature a metal housing.
Hose differences: The FC-2001S is equipped with a retractable flexible hose measuring Φ40 mm (1.57 inch) × 0.65 m (25.59 inch). The FC-2001A uses a fixed segmented (accordion-style) hose with a size of Φ50 mm (1.97 inch) × 0.6 m (23.62 inch). The FC-100A also uses a fixed segmented hose, with a size of Φ50 mm (1.97 inch) × 120 cm (47.24 inch).
Button switch position: The FC-2001S does not have a physical power button. The FC-2001A's power button is located on the back of the unit, while the FC-100A's power button is located on the side.
Remote control and digital panel options: Both the FC-2001S and FC-2001A do not support a digital display or remote control.
For more in-depth advice on selecting the right desktop fume extractor for your needs, check out our complete desktop solder fume extractor buying guide, which covers everything from smoke levels and filter types to workspace considerations.