This ultrasonic industrial humidifier features commercial-grade performance with a 21L/5.5Gal large tank, covering 473.6-1291.7 sq.ft and ideal for homes, greenhouses, supermarkets, warehouses, offices and factories. It runs quietly at ≤35 dB like a whisper, never disturbing work or rest. It offers intelligent humidification with 40%-90%RH preset humidity and 12-hour timer, operable via panel and remote to maintain constant humidity for energy saving and comfort, plus a built-in UV light for water purification that auto-off in sleep mode. Equipped with 3 mist discharge methods via 4-way, long mist tubes and caps, it adapts to low/high humidification needs; fog direction is adjustable for plant moisturizing, anti-static and dust removal, with 3-speed mist volume up to 1200ml/h. It supports easy top filling with a included hose for direct faucet refilling (no bending or heavy lifting), a visual water level window, and auto shuts off with alert light when low on water for safety. Bottom casters enable easy movement in large spaces, and its wide filling caliber allows quick, hassle-free cleaning. Color: White.