let'me HQ-JS2542-BLACK 10L Ultrasonic Humidifier

The let'me HQ-JS2542-BLACK is a 10-liter ultrasonic humidifier with a claimed 60-hour runtime on its lowest mist setting. Its top-fill design, app and remote controls, and three mist levels suit buyers seeking a large-capacity unit, though listing details vary on dimensions and some capabilities.

At a glance

Top-fill design is described for pouring water directly into the unit.
The manufacturer claims up to 60 hours per fill when using the lowest mist setting.
Three mist levels and a 360° nozzle are listed, with stated coverage of 600 square feet.
App, remote, and touch controls are listed. The feature text specifies Tuya app use over 2.4GHz Wi-Fi.
Sleep mode, adjustable humidity control, timer, night light, low-water indicator, and auto shutoff are claimed.

Price

$99.99Save 29%

Reference price: ~~$139.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The 10-liter capacity and stated low-setting runtime can reduce refill frequency compared with smaller-capacity units.
Top filling avoids needing to carry the tank to a separate sink for routine refills.
App, remote, and touch controls give several ways to adjust operation.

Cons

The stated 60-hour runtime applies only to the lowest mist setting, so higher output may require more frequent refills.

Technical specifications

18 specifications

Identity
Brand	let'me
Model	HQ-JS2542-BLACK
Operation type	Ultrasonic
Color	black

Capacity and performance
Capacity	10 liters
Coverage area	600 square_feet
Runtime	60 hours
Claimed mist output	300mL/h
Noise level	35dB
Mist settings	3 mist levels

Features and controls
Control methods listed	App, Remote, Touch
Power configuration	ac
Timer	24-hour timer
Humidity setting range	40%–90%
Outlet	360° nozzle

Dimensions and materials
Dimensions	7.48"D x 7.48"W x 25"H
Weight listed	5 pounds
Material listed	Acrylonitrile Butadiene Styrene

What to know before buying

Listing details to confirm

Listing details are inconsistent or unconfirmed: the title says 2.64 gallons, the specifications give 10 liters, and listed dimensions are 7.48"D x 7.48"W x 25"H while feature copy gives 7.87" × 7.87" × 26.18". The title and listing describe quiet operation at 35dB, while the feature text also claims 300mL/h output, a 24-hour timer, and 40%–90% humidity adjustment. App control is listed, but the feature copy specifies Tuya and 2.4GHz Wi-Fi. Confirm the exact configuration and operating details for the selected listing.

What’s in the box

Included

Humidifier
Remote
Manual
Quick-start guide

Who is it for?

A good fit for

Buyers who want a large-capacity humidifier with a top-fill design and multiple control methods.
People considering use in a bedroom or a space for which the claimed 600-square-foot coverage is appropriate.

Less suited to

Buyers who need a guaranteed runtime at higher mist settings or independently confirmed coverage.
Buyers who need dimensions confirmed before reserving a specific space.

let'me HQ-JS2542-BLACK 10L Ultrasonic Humidifier · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 37 ratings

5 stars71%71%
4 stars22%22%
3 stars7%7%
2 stars0%0%
1 star0%0%

Aggregate ratings skew positive, with most ratings in the five-star category, but the sample is limited and does not explain customers' reasons. This offers a modest indication of buyer satisfaction, not evidence that the claimed runtime, noise level, or coverage will match a particular room or use pattern.