Dreo 420S Smart Humidifier 4L - Ultrasonic Cool Mist, Auto Mode, Voice & App Control, 36H Runtime, 28dB Quiet, Aroma Diffuser - DR-HHM010S

• 4L Large Tank – Up to 36 hours of runtime for all-day hydration
• Smart Auto Mode – Advanced algorithm detects humidity with ±5% accuracy, automatically adjusts output
• Supersized Mist (3x larger) – Dual-intake design delivers ultrafine 5μm mist up to 40" high
• Voice & App Control – DREO app lets you adjust 6 mist levels, 24h timer, Auto/Sleep Mode
• Quiet Operation (28dB) – Whisper-quiet for sleep, work, or study
• RGB Ambient Light – Color shifts with real-time humidity levels; fully customizable via app
• Aroma Diffuser – Built-in aroma pad tray for essential oils
• Top-Fill Design – Easy refilling without mess; wide opening for effortless cleaning
• Digital Display
• Color: Clear/Black

The Dreo 420S Smart Humidifier combines intelligent automation with powerful performance for optimal home comfort. The advanced sensor detects humidity with ±5% accuracy, and Auto Mode adjusts mist output automatically to maintain your ideal level. The DREO app and voice control let you fine-tune 6 mist levels, set a 24-hour timer, or switch to Auto/Sleep Mode from anywhere.

Dual-intake technology produces supersized mist (3x larger than most humidifiers), with ultrafine 5μm particles reaching up to 40 inches high – hydrating your air without soaking furniture. The large 4L tank provides up to 36 hours of continuous runtime.

At just 28dB, whisper-quiet operation won't disturb sleep, work, or study. The RGB ambient light shifts colors with real-time humidity levels and is fully customizable via the app. A built-in aroma pad tray lets you add essential oils to double as a diffuser.

Top-fill design makes refilling mess-free, and the wide opening with detachable tank ensures effortless cleaning. Perfect for bedrooms, living rooms, nurseries, offices, and plant care. Backed by a 1-year warranty.


Safety Information
Place on a flat, stable surface

Keep out of reach of children

Use clean, room-temperature water only

Unplug before cleaning or refilling

Do not immerse base unit in water

Clean regularly to prevent mold and bacteria growth

Add essential oils only to aroma pad tray, not directly into water tank