The Weller Zero Smog TL suction device is equipped with a 50% activated carbon, 50% Chemisorb gas filter. The system is suitable for 1 - 2 workplaces. The quiet extraction (<50 dB) has particularly large filter surfaces for a long service life. The automatic filter notification system informs about an upcoming filter change. Replacing the filter is very easy and the device is very easy to use.