Executive Summary - Specification and Supply Position
TL;DR - The Mistairhome WL-QH01S (STD) holds 405 mL and mists 56 mL per hour or 25.7 mL per hour, which is 7.2 hours and 15.8 hours per fill; it covers 15 sq m (159 sq ft) at a 2.6 m ceiling and measures 24.9 dB on the high step and 22.1 dB on the sleep step; it draws 2.5 W and runs from USB-C 5V/1A, runs from a laptop port or a phone charger; no internal cell on this build; it weighs 401 g and measures 10.4 x 10.4 x 18.6 cm, and ships documented to CE / RoHS / FCC standards for import into Singapore. MOQ is 200 units per SKU with a 15-25-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Quiet Humidifier for Baby category as a direct manufacturer, not as a trading intermediary. The unit described below is one configuration out of 24 combinations (8 chassis x 3 SKU builds) that share a common misting family, a common tank and seal line and a common documentation set, so a distributor can build a coherent shelf from one source rather than stitching together unrelated suppliers. Every unit referenced on this page corresponds to a specific bill of materials held on file, so the figures below can be reproduced or independently verified at sample stage.
Full specification of WL-QH01S-STD:
| Misting method | Ultrasonic piezo disc at 1.7 MHz on a floating silicone isolator, cool mist, no heater in the path |
| Tank capacity | 405 mL |
| Mist output on the high step | 56 mL per hour |
| Mist output on the low step | 25.7 mL per hour |
| Run time per fill on the high step | 7.2 hours |
| Run time per fill on the low step | 15.8 hours |
| Coverage area | 15 sq m (159 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 24.9 dB |
| Noise at 1 m on the sleep step | 22.1 dB |
| Water type | Tap water or distilled; a demineralisation cartridge drops into the tank neck |
| Mineral dust handling | Cartridge optional, recommended wherever the supply is hard |
| Fill method | Wide top opening, filled in place from a jug |
| Battery pack | Not fitted, runs from the USB-C supply |
| Cordless run time | Not applicable, mains or USB powered |
| Charge time | Not applicable, no internal cell |
| Power input | USB-C 5V/1A, runs from a laptop port or a phone charger |
| Rated power on the high step | 2.5 W |
| Control interface | Touch strip with three mist steps, sleep mode and a two, four or eight hour timer |
| Night light | Amber ring below 4 lux, dimmable to fully dark |
| Protection | Dry-run shut-off by tank float, tilt switch, overcurrent limit on the adapter |
| Dimensions | 10.4 x 10.4 x 18.6 cm |
| Weight | 401 g |
| Warranty | 12 months |
Shipping configuration: Standard build, 1 x USB-C cable, 1 x cleaning brush, instruction leaflet, retail box. Master carton holds 60 units. Stated lead time is 15-25 days from order confirmation and deposit. Misting discs, wicks and cartridges are repeat line items and are ordered separately from the appliance.
Why Buyers Are Sourcing This Category Now
Buyers in Singapore are not buying comfort so much as buying a stop to a specific complaint: a dry throat in the morning, static off a carpet, a child waking coughing, or white dust on dark furniture. Two routes dominate access. The traditional route is importer to distributor to retail; the faster one is the cross-border seller who buys direct, preps for the marketplace and skips two margin layers.
For the Quiet Humidifier for Baby segment the deciding specifications are the noise figure at the step people sleep on, the run time per fill, and what the unit does with dissolved minerals. Peak mist volume ranks below all three, which surprises first-time buyers. This is why the table above states figures by model rather than by marketing tier: a buyer comparing two SKUs needs the noise on the sleep step, the run time per fill and the water handling side by side, because those three predict both satisfaction and return rates better than any other set.
Wanlin serves Singapore through three programmes that suit different balance sheets. New partners start with sample evaluation then a mixed trial order. Established distributors move to scheduled container shipments with locked pricing windows. Brand owners run private-label programmes with their own artwork and manuals. In all three cases the factory documentation, including the certificates and battery files listed further down this page, references the specific model code on the order rather than a generic family certificate, which is the most common cause of customs delay in this category. For this configuration that means 25.7 mL per hour at 22.1 dB, holding 15.8 hours per fill across a 15 sq m (159 sq ft) room.
Engineering Notes - Noise, Mist Output and Water Quality
Three engineering decisions separate this platform from the commodity end of the category. The first is how quiet is stated. A decibel figure without a distance, a room and a step is not a specification, so we publish the conditions next to the number: measured at one metre in a semi-anechoic corner, and quoted separately for the high step and the sleep step. The sleep-step figure is the one that belongs in a tender document, because it is the step an occupant actually leaves the unit on all night.
The second is where the noise comes from, because that decides how far it can be pushed down. Three sources remain once the fan is removed: the disc drive frequency, the turbulence at the outlet, and the structure-borne path into whatever the unit stands on. The first is handled by driving the disc below its resonant peak, the second by a low-turbulence outlet grille, and the third by a floating silicone isolator - which is why a unit reads measurably louder on a hollow bedside table than on a carpet, and why we quote the distance rather than letting a buyer assume.
The third is the trade that nobody states. Quieter costs output: a disc driven below resonance moves less water, and a restricted outlet moves less air. Rather than hide that, we publish both steps and let the buyer decide which one the room needs. On the WL-QH01S (STD) the figures worth carrying into the next order are the 405 mL tank, the 15.8 hours per fill on the low step, and the 22.1 dB reading on the sleep step.
Featured Deployment and Field Case Records
Three deployment records from the Quiet Humidifier for Baby programme, each with the conditions that shaped it. Site detail is kept because it is the part that transfers: the water, the ceiling, the rota and the complaint are what decide whether a unit stays in service, and none of them appear on a specification sheet.
Case Study 1: Sapporo, Japan
Deployment: A regional hotel group with five properties across Hokkaido
Timing: Two winters from December 2024
Hokkaido winters are dry and cold, and the group's previous supplier had shipped units whose plugs did not match. Regional plug and voltage documentation sounds trivial until a container is held at the port, and it is now the first line of our quotation for any market. The group has since standardised three chassis across all five properties.
Case Study 2: Izmir, Turkey
Deployment: A regional distributor covering the Aegean coast
Timing: Two seasons from October 2024
The distributor sells into both pharmacy and hotel channels and needed two different documentation sets from the same shipment. Certificates issued per model code made that possible without a second test round, and the distributor now orders in a single annual container rather than seasonally.
Case Study 3: Leeds, United Kingdom
Deployment: A maternity hospital refurbishing 26 post-natal rooms
Timing: Six months from May 2025
Infection control reviewed everything before procurement would sign, and asked two questions suppliers rarely prepare for: how the tank is cleaned, and how often. A tank a hand cannot reach into is a tank that never gets cleaned properly, so the wide-opening models passed and the narrow-neck ones were eliminated on a hygiene ground rather than a performance one. The cleaning interval went into the ward's own maintenance schedule.
The pattern across all three is that the deciding factor was never peak output. It was whether the tank lasted a full shift, whether the unit could be cleaned inside the time a round allows, and whether anyone complained about the noise or the dust. Those are the questions we ask before quoting. The WL-QH01S (STD) packs 60 units to a carton, carries a 12 months warranty and a 15-25 days stated lead time, and draws 2.5 W on the high step.
Application Scenarios Across Bedrooms, Offices and Wards
Four placement patterns cover most of the enquiries we see for this category. The useful observation is that each one is answered by configuration and placement rather than by buying a larger unit, which is the default reflex and usually the wrong one.
| Scenario | Room or site | What the site needs | What the unit does |
| SC09-TANKRUN | Rooms with nobody responsible for refilling, and buildings on a weekly maintenance round | Refilling decides whether an appliance survives in a managed building more than performance does. | A large tank holding a night plus a working day on the low step, with a humidistat so the unit runs only when the room actually needs it. |
| SC10-LARGESPACE | Open-plan rooms, studios and lobbies with ceilings well above 2.6 m | A floor-area figure quietly assumes a standard ceiling, and a heritage or lobby space rarely has one. | Sizing against the room volume instead, and where the space opens to the outside, closed-loop control holding a target rather than a fixed mist step. |
| SC01-NURSERY | Night feeds and settled sleep in a room shared with an infant | Nothing should wake a sleeping infant, and no lamp should be on when the room is dark. | The sleep step holds output low all night while the chassis stays under the ambient level of a quiet bedroom, and the night light can be switched off entirely rather than merely dimmed. |
| SC02-BEDSIDE | A nightstand beside an adult bed in a heated room | A unit that has to be refilled at two in the morning stops being used inside a week. | A tank sized for a night plus part of the following day on the low step, with a level window that can be read from standing height before the light goes out. |
Two of these four are decided before the unit is switched on: whether the tank lasts the interval the site can actually service, and whether the cleaning task fits the round. For this configuration that means 25.7 mL per hour at 22.1 dB, holding 15.8 hours per fill across a 15 sq m (159 sq ft) room.
What a Factory-Direct Programme Changes for the Buyer
The practical advantage of a factory programme is flexibility in how the first order is shaped, not the unit price. A mixed container across three SKUs lets a distributor test a range without committing to full container quantities on unproven models, which is the single biggest risk reduction available to a new importer and one that intermediaries rarely offer because it complicates their own purchasing.
The second advantage is lead-time honesty. A stated lead time of 15 to 35 days measured from order confirmation and deposit, written on the proforma invoice rather than left open, is worth more to a buyer planning a season than a faster number that slips. Battery shipments add a documentation step at booking, which we handle but which needs a few extra days on the freight side, and we say so before the order rather than after.
The third is continuity. Tooling, mouldings and the documentation set stay the same across seasons, so a distributor who lists a model code this year can relist it next year without a new test round. On the WL-QH01S (STD) the figures worth carrying into the next order are the 405 mL tank, the 15.8 hours per fill on the low step, and the 22.1 dB reading on the sleep step.
Certification, Water Quality and Market Access
Four documentation errors account for most of the customs delay we are asked to fix, and all four are avoidable at quotation stage. The first is a certificate naming a family rather than the model code on the invoice. The second is a battery build shipped without UN38.3 and MSDS. The third is a manual in the wrong language for the destination. The fourth is a plug that does not match the destination.
None of those are engineering problems. They are paperwork problems, and they are the reason we ask three questions before quoting: which markets, which languages on the manual and the artwork, and whether any unit in the order carries a cell. Answering those three costs a buyer five minutes and removes the majority of the delay risk.
What we will not do is back-date a certificate or issue one against a model we did not build. A buyer who needs that is a buyer whose shipment will be stopped eventually, and the cost of the test is always smaller than the cost of the container sitting at the port. The WL-QH01S (STD) packs 60 units to a carton, carries a 12 months warranty and a 15-25 days stated lead time, and draws 2.5 W on the high step.
Unit Economics, Consumables and Order Sizing
Three numbers decide whether this line works for a distributor, and the first one is not the unit price. Freight is the variable most buyers undercount: at 0.154 cubic metres per master carton of 60 units, a 20 ft container takes about 138 cartons, or roughly 8,280 units, and a 40 ft container about 303 cartons, or roughly 18,180 units. Those are volume figures before palletisation and loading losses, so a buyer should treat them as an upper bound.
The second number is the consumable. A misting disc is a wearing part with a service life measured in months of continuous use rather than years, and hard water shortens it considerably. We suggest one spare disc per twenty units on a first order and one cartridge per unit where the water is hard, and both ride in the same container as the appliances.
The third is the cost of a return. In this category the majority of returns come from mineral dust, not from malfunction, and the cartridge that prevents them costs a fraction of the return it avoids. For this configuration that means 25.7 mL per hour at 22.1 dB, holding 15.8 hours per fill across a 15 sq m (159 sq ft) room.
Buyer Questions Answered
What order size does Wanlin accept for a first quiet humidifier shipment?
200 units per SKU on standard builds, 300 where a custom colour or private-label packaging is involved, and several models may share one container provided each SKU clears its own minimum. For a buyer testing the category for the first time, a mixed container is the lower-risk route and is the one we recommend over a single-SKU container on an unproven model.
How loud is the unit in practice, and which figure should a buyer compare?
Compare the sleep-step figure, not the headline one. WL-QH01S is rated 22.1 dB on the sleep step and 24.9 dB on the high step, both measured at one metre under stated conditions. In a bedroom the high step is rarely used, so the number that predicts whether the unit stays plugged in is the lower one.
Will an ultrasonic quiet humidifier put mineral dust on dark furniture?
On hard water, yes, unless the build deals with it. The disc atomises the water and everything dissolved in it, and the minerals settle as a white film. For WL-QH01S-STD the answer built into the specification is cartridge optional, recommended wherever the supply is hard. Where neither option is acceptable to a buyer, the evaporative chassis removes the question entirely because the water never becomes airborne.
What documentation comes with a quiet humidifier shipment for customs?
CE technical file, RoHS and REACH declarations, an EMC report and the IEC 60335-1 appliance safety report as standard, plus UN38.3, IEC 62133 and MSDS on any build carrying a cell, and FCC for the digitally controlled models going to North America. Every document names WL-QH01S rather than a family, which is what a customs officer checks.
Is private label available across the quiet humidifier range?
Across the whole range, including housing colour, logo, retail artwork, manual language and the accessory kit. Most of it works inside existing tooling, so it does not add engineering time. What it does add is a decision about consumables, and we raise that early because the cartridge choice affects the return rate more than any artwork decision does.
What is the cleaning routine, and how much staff time does it take?
Five to seven days in continuous use, with a dry-out before any period of storage. The routine takes under two minutes on this chassis because the tank opening is wide enough for a hand and a brush, which is deliberate. A narrow-neck tank takes longer, gets cleaned less often, and eventually gets replaced - which is the real cost of a cheap moulding.
What happens if a unit fails inside the warranty period?
12 months on WL-QH01S against manufacturing defect. In practice most failures outside the warranty period are a worn disc or a scaled cartridge rather than a faulty appliance, which is why we stock both as separate lines and ship them with the units. A distributor who can supply the part keeps the customer.
What is the timeline from sample approval to a shipped container?
From approved sample to a shipped container, 15-25 days for first production plus the freight booking step, which is longer on battery builds because of the cell documentation. Sampling itself is 5 to 7 working days on an existing specification. We put the production figure on the proforma invoice so it is a commitment rather than an estimate.
Who This Programme Suits
Five kinds of partner buy this programme, and they want different things from it. Importers want container economics and documentation they can hand to a broker without rewriting. Regional distributors want a range coherent enough to explain on one page, and a spares line they can actually stock.
Brand owners want the artwork and the manuals right and the chassis underneath unchanged, which is the easiest request we handle because most of it sits inside existing tooling. Pharmacy and home-care groups want the consumable, because the repeat revenue is there rather than in the appliance. Cross-border sellers want prep: barcodes, multilingual manuals and packaging that survives a fulfilment centre.
Export traders sit across all five, and the thing they ask for most often is a specification sheet they can forward without editing, because their customer will ask about noise, run time and water before asking about price. On the WL-QH01S (STD) the figures worth carrying into the next order are the 405 mL tank, the 15.8 hours per fill on the low step, and the 22.1 dB reading on the sleep step.
How a First Order Is Structured
A first order runs in five steps and none of them need to be slow. The first is the specification: which chassis, which SKU build, and which markets, because the market list decides the documentation. The second is sampling, 5 to 7 working days from an existing specification or 15 to 20 if a custom colour is required.
The third is the paperwork - certificates, manuals, artwork and the battery files where a cell is fitted - and it runs in parallel with the second rather than after it, which is where most of the time is either saved or lost. The fourth is production, measured from order confirmation and deposit. The fifth is booking, which is where a battery build needs its extra few days.
What we ask a buyer to decide before step one is which consumables travel with the appliances, because that choice affects the packing list and the freight, and changing it later costs a second shipment. The WL-QH01S (STD) packs 60 units to a carton, carries a 12 months warranty and a 15-25 days stated lead time, and draws 2.5 W on the high step.
Next Step for Import Buyers
The right way to evaluate this unit is to order a sample on this specification and measure it: mist output by a weighed run, run time per fill at the low step, and noise at one metre in a quiet room on both steps. All three are reproducible, and a buyer who runs them will know more in an afternoon than any datasheet can convey.
We publish figures that can be checked, we state the ceiling height behind the coverage number, and we say plainly where the honest answer depends on the room or the water. That is a narrower claim than some competitors make, and it is the one we can stand behind at sample stage.
Export enquiries are welcome from distributors, brand owners, pharmacy and home-care groups, hospitality operators, cross-border sellers and export traders. Samples, specification sheets and the certification and battery files are available on request. For this configuration that means 25.7 mL per hour at 22.1 dB, holding 15.8 hours per fill across a 15 sq m (159 sq ft) room.
Published by: Wanlin Manufacturing Group, MistAirHome Export Division
Published on: September 28, 2026
Data sources: in-house factory testing + misting disc and cell specifications + certification and battery files + partner deployment records
Company address: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
References: factory quality manual + third-party test reports + customer shipment records
Contact: Mistairhome@163.com / +8613261677119 / https://www.mistairhome.com
