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Purifier vs Humidifier
Decide whether to filter dust, smoke, pollen, and odors with an air purifier or add moisture to dry air with a humidifier.
SAYDSI Smart Humidifier with App Control
This SAYDSI humidifier solves a specific problem for large homes or plant lovers: maintaining consistent humidity without constant refills. The 2.1-gallon tank runs up to 65 hours on low mist, so you can set it and forget it through a workday or overnight. The top-fill design means you simply pour water in without lifting or removing the tank—no spills, no hassle.
You control everything from your phone. Set a schedule so the humidifier kicks on before you get home, or dial in your ideal humidity between 45% and 95%. The built-in sensor reads the room and adjusts automatically. At night, switch to sleep mode (under 35dB) and the display dims. The 24-hour timer lets you run it only when needed. It covers up to 1,800 sq. ft., perfect for a basement, open-concept living area, or greenhouse. The blue night light adds a soft glow, and you can turn it off if you prefer total darkness.
Features
- 2.1 gallon water tank
- Smart app control
- Customizable humidity 45%-95%
- Top-fill design
- Sleep mode below 35dB
- 24-hour timer
- 1800 sq.ft coverage
General specs
- Brand: SAYDSI
- Seller: Amazon
- ID: B0DB86SZC4
- Brand: SAYDSI
- Mist Levels: 4
- Night Light: Yes (Blue)
- (V) Voltage: Not specified
- (W) Wattage: Not specified
- (Lbs) Weight: Not specified
- (Hours) Timer: 1-24
- Design Fill Top: Yes
- (Hours) Run Time: 65
- (Liters) Capacity: 8
- Cool Mist Or Warm: Cool
- Smart APP Control: Yes
- (Gallons) Capacity: 2.1
- (%) Humidity Range: 45-95
- Dimensions (inches): Not specified
- Material Tank Water: Plastic
- (Db) Mode Noise Sleep: <35
- (Sq. Area Coverage Ft): 1800
- (Liters) Capacity Tank: 8
- (Gallons) Capacity Tank: 2.1
- First listed by seller: 5/20/26
If you are interested in more details, you can find full information on the seller's page.
Amazon live offers
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Top live offer is the offer currently shown first for this Amazon listing. It may differ from the lowest available price.
FBA means the order is fulfilled by Amazon, even when the seller is a third-party merchant.
Shippable means the offer is listed as available for delivery on Amazon.
New, Used and Refurbished describe the item condition shown for that Amazon offer.
Top live offer
$69.00
Free shipping
Used - Good
Third-party seller
FBA
Shippable
Offers updated: 6/3/26
Shipping options
Delivery to 
Russia
Russia
Available
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| Brand | SAYDSI | Honovos | Jingkey | KZF | Hiswelle | |
| Model | ||||||
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| Price | $69.00 | $65.99 | $399.99 | $59.99 | $69.99 | $72.67 |
| Seller | Amazon | Amazon | Amazon | Amazon | Amazon | Amazon |
| Update | May 27, 2026 | May 27, 2026 | May 24, 2026 | May 29, 2026 | May 29, 2026 | May 29, 2026 |
| Mist Levels | 4 | 4 | 3 | |||
| Mist Output | 300 ml/h | 350 ml/h | Supersized, Dual-intake, 360° dual mist outlet | |||
| Noise Level | <35 dB | Quiet | Quiet, Ultra quiet sleep mode | |||
| Capacity | 7L, 1.85Gal, 0.247 cu ft | 9 L, 2.38 gal | 8 L, 2.1 gal | |||
Smart Humidifier with App Control 1800 sq.ft coverage
$69.00
When this device makes sense
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