This is a quick, informal demonstration of Metcal Smart Fume Extraction. The BVX 250 Fume Extraction System is connected to a CV-5210 soldering system via a single USB-A cable. When the soldering station is idle, so is the fume extractor. The fume extractor switches into extraction mode when the soldering station is used. Watch the LED status ring change from blue (Stand-by) to green (Extracting) and back to blue.