About central vacuum cleaner:
1. Powerful, silent and long lasting motor imported from Taiwan with patent snail impeller design
2.Build-in silencer cotton and rotary top discharge gas, self-cooling design, 24 hours non-stop running.
3.4 sets of 99% efficiency filter built-in(6 sets for MODEL R-475).3--5μm particle can be filtrated.
4.Filter element passes environmental certification requirements.
5.24hours PM2.5granularityreal-time monitoring
6. The filter system uses fully automatic intelligent reversed injection, and the injection frequency is automatically adjusted by the central microprocessor board.