Quality Bedroom Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.
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Quality Bedroom Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.+8613261677119
TL;DR - The Mistairhome WL-SM02H (PLUS) holds 5000 mL and mists 260 mL per hour or 118.0 mL per hour, which is 19.2 hours and 42.4 hours per fill; it covers 68 sq m (736 sq ft) at a 2.6 m ceiling and measures 28.8 dB on the high step and 26.1 dB on the sleep step; it draws 15.1 W and takes its supply from Mains adapter, 100-240 V, regional plug supplied; the humidistat holds target band 30 to 85 percent in 1 percent steps, held within 3 percent over Wi-Fi 2.4 GHz plus a wired sensor header for a remote probe, and the voice path is Amazon Alexa and Google Home for target changes and on off; no internal cell on this build; it weighs 1853 g and measures 27.4 x 27.4 x 46.8 cm, and ships documented to CE / RoHS / FCC standards for import into Sweden. MOQ is 200 units per SKU with a 25-35-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Humidifier with Touch Control 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-SM02H-PLUS:
| Misting method | Ultrasonic piezo disc bank at 1.7 MHz feeding a wide-throw outlet collar |
| Tank capacity | 5000 mL |
| Mist output on the high step | 260 mL per hour |
| Mist output on the low step | 118.0 mL per hour |
| Run time per fill on the high step | 19.2 hours |
| Run time per fill on the low step | 42.4 hours |
| Coverage area | 68 sq m (736 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 28.8 dB |
| Noise at 1 m on the sleep step | 26.1 dB |
| Water type | Tap water or distilled; the tank is sized for a full night plus a working day |
| Mineral dust handling | Cartridge bay in the tank neck, two cartridges included on the Plus build |
| Fill method | Top fill from a jug, with a level window readable from standing height |
| 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 | Mains adapter, 100-240 V, regional plug supplied |
| Rated power on the high step | 15.1 W |
| Network link | Wi-Fi 2.4 GHz plus a wired sensor header for a remote probe |
| App platform | Dashboard view for multi-room installs, exportable CSV humidity log |
| Voice assistant support | Amazon Alexa and Google Home for target changes and on off |
| Humidistat range and accuracy | target band 30 to 85 percent in 1 percent steps, held within 3 percent |
| Control interface | Capacitive panel with target humidity, four mist steps and a child lock |
| Night light | White status bar readable from a doorway, dimmable to off |
| Protection | Dry-run shut-off, tilt switch, overfill overflow channel, sensor fault alert |
| Scheduling | Seven day schedule with six events per day and a holiday hold mode |
| Dimensions | 27.4 x 27.4 x 46.8 cm |
| Weight | 1853 g |
| Warranty | 24 months |
Shipping configuration: Plus build, + hard carry case + wick and cartridge starter set + gift box + funnel. Master carton holds 4 units. Stated lead time is 25-35 days from order confirmation and deposit. Misting discs, wicks and cartridges are repeat line items and are ordered separately from the appliance.
Three things move this category in Sweden: heated or cooled air that dries a room faster than people expect, buildings sealed tightly enough that nothing replaces the moisture, and a cleaning task that decides whether the product is still in use by March. Market entry cost keeps falling because small-batch first orders are viable: a distributor can test a range without committing to full container quantities on unproven models.
Distributors handling Humidifier with Touch Control lines consistently find that the repeat revenue sits in the consumable, in cartridges and wicks and replacement discs, rather than in the appliance. 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 Sweden 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. The WL-SM02H (PLUS) packs 4 units to a carton, carries a 24 months warranty and a 25-35 days stated lead time, and draws 15.1 W on the high step.
Three engineering decisions separate this platform from the commodity end of the category. The first is where the intelligence lives. A unit that stops working when the internet does is not a controlled appliance, it is a remote control with a humidifier attached, so the target and the schedule are stored on the unit itself and the network is only a convenience. With the router down the closed loop keeps running to the last target, and when the link returns the logged trace backfills rather than showing a gap.
The second is what the sensor is actually reading, because that decides whether a target means anything. A humidity sensor sitting next to the mist outlet reads saturated air within a minute and shuts the unit down early, so the probe is placed in the intake path behind a baffle and calibrated at the factory against a reference hygrometer. A buyer can repeat the check in twenty minutes with a shop hygrometer, which is the only way a published accuracy figure means anything.
The third is the radio, and it is where cheap builds fail in the field. We specify 2.4 GHz rather than 5 GHz because it reaches through the two walls that matter in an apartment, we keep a Bluetooth path for first pairing so a unit can be set up where the Wi-Fi password is not to hand, and we keep the radio off the safety path entirely: dry-run shut-off, tilt and overcurrent protection are hard-wired and do not depend on firmware. On the WL-SM02H (PLUS) the figures worth carrying into the next order are the 5000 mL tank, the 42.4 hours per fill on the low step, and the 26.1 dB reading on the sleep step.
Three deployment records from the Humidifier with Touch Control 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.
Deployment: A cliff-top apartment block 200 m from the Pacific where the salt air reaches the balconies year round
Timing: Fifteen months from March 2025
Coastal installations fail at the connector before they fail at the disc. On this site the first year's returns were all charging-port corrosion, not electronics, so the fix was mechanical: a sealed port flap and a stand that lifts the unit clear of the balcony film. Once the units stopped coming back, the administrator asked for the humidity log, which is when the smart build earned its place.
Deployment: A neonatal unit with 24 cots and a strict cleaning protocol between occupants
Timing: One year from May 2025
The unit needed equipment that could be cleaned and declared, and it needed proof that the room environment was being held. The material declaration covered the first requirement, the logged band the second. Nursing staff, who had been overriding the previous units, stopped overriding these because the target was visible and the alarm was meaningful.
Deployment: A tea warehouse where leaf moisture affects the auction sample
Timing: One year from March 2025
Warehouse humidity decides sample grade, and the manager had been adjusting ventilation by feel. A held target with a log made the adjustment repeatable and gave the manager something to show the buyer. Sample consistency improved enough that the warehouse stopped discounting the first lots of the season.
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-SM02H (PLUS) packs 4 units to a carton, carries a 24 months warranty and a 25-35 days stated lead time, and draws 15.1 W on the high step.
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 |
| SC07-GROWING | Propagation benches, graft rooms and greenhouses where a missed night costs a crop | Plants fail at three in the morning, which is exactly when nobody is looking. | A held band with an alarm on drift catches the failure at night rather than at the morning walk. |
| SC05-MISTFREE | Hard water markets where an ultrasonic plume leaves minerals on dark surfaces | White dust is the complaint that generates the return, and no app feature fixes it. | The evaporative build leaves minerals in the wick instead of the air, and the app counts down wick life so the filter is changed before output falls. |
| SC03-FLEET | Portfolios of rooms run by one person: hotels, serviced apartments and student blocks | Walking the corridor to check water levels is the cost that kills these programmes, not the hardware. | Per-room status on one dashboard turns the morning round into a list of the rooms that actually need attention. |
| SC01-TARGET | Rooms where the brief is a humidity band rather than a mist setting | An output figure answers the wrong question when the buyer actually wants a room held at a number. | The humidistat holds a target band and the app records the trace, so a facilities team can show the room stayed inside the band instead of showing that a unit was switched on. |
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 118.0 mL per hour at 26.1 dB, holding 42.4 hours per fill across a 68 sq m (736 sq ft) room.
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-SM02H (PLUS) the figures worth carrying into the next order are the 5000 mL tank, the 42.4 hours per fill on the low step, and the 26.1 dB reading on the sleep step.
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-SM02H (PLUS) packs 4 units to a carton, carries a 24 months warranty and a 25-35 days stated lead time, and draws 15.1 W on the high step.
The economics of this line are an annuity, not a one-off sale, and buyers who plan it that way outperform the ones who do not. The appliance is the entry; the cartridge, the wick and the replacement disc are the repeat, and in the pharmacy and hospitality channels the consumable revenue overtakes the appliance revenue within the first year.
Freight is the part that needs doing carefully. At 0.179 cubic metres per carton of 4 units, a 40 ft container carries roughly 1,044 units by volume, and a 20 ft about 472. Those are upper bounds before pallet and loading losses, and the honest planning figure is a little below them.
What we suggest to a first-time buyer is deliberately unglamorous: a mixed trial order across two or three SKUs, spares at one disc per twenty units, a stated lead time of 25-35 days written on the proforma invoice, and a re-order point set by sell-through rather than by calendar. On the WL-SM02H (PLUS) the figures worth carrying into the next order are the 5000 mL tank, the 42.4 hours per fill on the low step, and the 26.1 dB reading on the sleep step.
What order size does Wanlin accept for a first smart 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.
Can the app and the voice integration carry our own brand, and is a cloud account compulsory?
Compare the sleep-step figure, not the headline one. WL-SM02H is rated 26.1 dB on the sleep step and 28.8 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 smart 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-SM02H-PLUS the answer built into the specification is cartridge bay in the tank neck, two cartridges included on the plus build. 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 smart 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-SM02H rather than a family, which is what a customs officer checks.
Is private label available across the smart 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?
24 months on WL-SM02H 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, 25-35 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.
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-SM02H (PLUS) the figures worth carrying into the next order are the 5000 mL tank, the 42.4 hours per fill on the low step, and the 26.1 dB reading on the sleep step.
The cleanest first orders we see share one habit: the buyer declares the destination list at quotation stage. Certificates, manuals and plugs all follow from it, and raising them once as a package costs far less than raising them market by market as each order lands.
After that the sequence is ordinary. Sample evaluation first, on the actual specification rather than a similar one, with the buyer measuring mist output by a weighed run, run time per fill at the low step, and noise at one metre in a quiet room. Then the proforma invoice, which carries the stated lead time and the packing list rather than leaving them open. Then production, then booking.
The one step buyers skip and regret is the spares decision. Adding a spare disc per twenty units and a cartridge per unit where the water is hard costs almost nothing on a first container and prevents the top-up shipment that otherwise arrives in the middle of the season. On the WL-SM02H (PLUS) the figures worth carrying into the next order are the 5000 mL tank, the 42.4 hours per fill on the low step, and the 26.1 dB reading on the sleep step.
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 118.0 mL per hour at 26.1 dB, holding 42.4 hours per fill across a 68 sq m (736 sq ft) room.
Published by: Wanlin Manufacturing Group, MistAirHome Export Division
Published on: September 29, 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
