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Good causes to decide VT-501 1 Supply good air quality and remedy ventilation subject limited to a unique room or a small residence 2 Pefectly eradicate condensation issues in Winter 3 Prevent immoderate indoor humidity and mildew build-up 4 Reduce thermal loss for aircon components five Take care of indoor brand new air delivery and stale air exhaust either Features and Advantages 1 Diameter of ducting: 160mm 2 Ducting extension: 250-500mm 1 Voltage : 110-240V 50/60HZ 2 Noice level: 22<32<39dB 3 temperature: -20°C to +50°C 4 IPX3 water and dust proof five With built-in humdiity sensor, select humidity mode to control fan pace 6 Magnetic mounting plate for simple installation and maintenance 7 Optional HEPA filter out to additional purify air, catch virus, bacterial and PM2 More Intelligent Operations On The App 1 Monitor indoor genuine time temperature and humidity 2 Remotely select working modes three Timing surroundings for the fan four Manage indoor humidity five Control multiple devices at identical time VT501 Working Principle: CYCLE I Warm stale air is extracted from the room, then it passes through the ceramic calories accumulator and whereas flowing by way of it, heats and moistens the ceramic accumulator by transferring thermal energy After a while, because the ceramic heat exchanger will get heated, the ventilator switches to offer mode automatically CYCLE II Clean fresh air from outdoors passes during the ceramic energy accumulator, absorbs moisture and is heated up to the room temperature due to the accrued warmth When the temperature of the accumulator drops down, the fanswitches to extract mode and the cycle is renewed The ventilator changes its operation mode between supply and extraction each 65 seconds The List In The Box ①:1 Piece Of Heat Recovery Unit ②:2 Pieces Of G3 Filters And 1 Piece Of Ceramic Core ③: 1 Pieces Of Remote Control ④: 1 Piece Of Magnetic Mounting Plate ⑤: 1 Piece Of User Manual Click Here to Select Mini Hepa Filter For Recuperator And Heat Recovery Unit