Quality Bedroom Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.
Customer Service Hotline:
+8613261677119
Quality Bedroom Humidifier — Wholesale from MistAirHome China Factory. Custom Branding Available.+8613261677119
TL;DR - The Mistairhome WL-SM07M (PLUS) holds 250 mL and mists 30 mL per hour or 14.5 mL per hour, which is 8.3 hours and 17.2 hours per fill; it covers 8 sq m (85 sq ft) at a 2.6 m ceiling and measures 20.8 dB on the high step and 18.1 dB on the sleep step; it draws 2.1 W and takes its supply from USB-C 5V/0.5A; the humidistat holds target band 40 to 70 percent in 5 percent steps, held within 4 percent over Bluetooth Low Energy to the phone, no router needed, and the voice path is phone control only, no voice assistant at this size; 1700 mAh lithium polymer, giving 4.9 hours per charge on the low mist step; it weighs 198 g and measures 7.0 x 7.0 x 12.4 cm, and ships documented to CE / RoHS / FCC standards for import into South Korea. MOQ is 200 units per SKU with a 25-35-day lead time, FOB Shenzhen or EXW Longgang.
China Wanlin supplies the Smart Ultrasonic Humidifier for Plants 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-SM07M-PLUS:
| Misting method | Ultrasonic piezo micro-disc at 2.4 MHz with a capillary feed |
| Tank capacity | 250 mL |
| Mist output on the high step | 30 mL per hour |
| Mist output on the low step | 14.5 mL per hour |
| Run time per fill on the high step | 8.3 hours |
| Run time per fill on the low step | 17.2 hours |
| Coverage area | 8 sq m (85 sq ft) at a 2.6 m ceiling |
| Noise at 1 m on the high step | 20.8 dB |
| Noise at 1 m on the sleep step | 18.1 dB |
| Water type | Distilled recommended; the disc is fine-pitch and scales quickly on hard water |
| Mineral dust handling | Cartridge not fitted at this size; distilled water is the answer |
| Fill method | Screw base, filled at a sink, sealed for packing in a bag |
| Battery pack | 1700 mAh lithium polymer |
| Cordless run time | Up to 4.9 hours per charge on the low mist step |
| Charge time | 2.9 hours from empty |
| Power input | USB-C 5V/0.5A |
| Rated power on the high step | 2.1 W |
| Network link | Bluetooth Low Energy to the phone, no router needed |
| App platform | Phone becomes the display: target, step and a two to eight hour timer |
| Voice assistant support | phone control only, no voice assistant at this size |
| Humidistat range and accuracy | target band 40 to 70 percent in 5 percent steps, held within 4 percent |
| Control interface | Single button with two steps, plus target humidity from the phone |
| Night light | Single warm dot beside the outlet |
| Protection | Dry-run shut-off, sealed cap with a silicone valve, cell overcharge cut-out |
| Scheduling | Two to eight hour run timer with a daily repeat option |
| Dimensions | 7.0 x 7.0 x 12.4 cm |
| Weight | 198 g |
| Warranty | 12 months |
Shipping configuration: Plus build, + hard carry case + wick and cartridge starter set + gift box + funnel. Master carton holds 60 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 South Korea: 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. 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.
Returns in the Smart Ultrasonic Humidifier for Plants category cluster around three causes: mineral dust on hard water, an app that cannot hold a schedule, and units sized to a floor area in a room with a much higher ceiling. All three are answered at quotation stage rather than after arrival. 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 South Korea 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-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
Three numbers decide whether this category works in a room, and only one of them appears on most specification sheets. The first is millilitres per hour, quoted for both steps so a buyer can divide it into the tank capacity and know how long a fill lasts before ordering a single unit. The second is hours per fill, which is the number that decides whether a unit needs filling every night or every second night - and therefore whether it survives its first season in a household.
The third is the coverage figure, and it is the one most often quoted dishonestly. We state the ceiling height behind it, because a floor area alone means nothing: a room with 3.4 m ceilings holds proportionally more air and will run a unit dry faster than the floor plan suggests, and a mechanically ventilated room loses moisture continuously regardless of its size. Any buyer can check this in twenty minutes with a hygrometer, and we would rather they did.
Every production batch is sampled for four things before release: mist output against the declared figure by weighed run, the decibel reading at one metre on both steps, pack capacity against the cell specification by discharge test where a cell is fitted, and dry-run shut-off function on an empty tank. The WL-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
Three deployment records from the Smart Ultrasonic Humidifier for Plants 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 citrus nursery grafting 60,000 young plants a season under polythene
Timing: Two seasons from November 2024
Graft take is a humidity problem before it is anything else, and the nursery had been misting by hand on a schedule two people argued about. Two units hold a target through the first ten days after grafting, and the log settled the argument: take rate moved from 71 to 88 percent across the season. The nursery now runs the graft rooms on a target rather than a rota.
Deployment: A commercial print shop where paper curl was scrapping sheets on the long runs
Timing: One year from February 2025
Paper dimensions change with moisture content, and the shop was losing long-run work to misregistration. Holding the paper store at 50 percent stopped the curl before it reached the press. Spoilage on runs above 20,000 sheets fell from 6 percent to under 1, which is the number that got the second store approved.
Deployment: A museum store beside the corniche holding manuscripts and textiles
Timing: Two years from June 2024
The conservator's requirement was a narrow band and a record, since the funding body asks for both. The remote probe let her place the sensor inside the case rather than on the wall, which is where the reading matters. The log has run for two years and is part of the funding renewal.
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-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 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 |
| SC02-NIGHTSTEP | Bedrooms that run overnight with the light off and nobody touching a control | A unit that needs adjusting at two in the morning stops being a smart unit and becomes a nuisance. | A scheduled step-down at bedtime holds output low all night, the display goes dark, and the schedule repeats without anyone resetting it. |
| 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. |
| SC08-EMPTY | Holiday lets, cabins and seasonal villas that sit unoccupied for weeks | An appliance in an empty house has to be verifiable from somewhere else. | Remote arming holds a low maintenance target while the property is empty and raises it before arrival, with the log replacing the drive-out inspection. |
| 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 14.5 mL per hour at 18.1 dB, holding 17.2 hours per fill across a 8 sq m (85 sq ft) room.
Buying direct changes three things that no catalogue can show. The first is the bill of materials. A trading company quotes a price; a factory can tell you which disc, which cell and which seal is inside the unit, and what each of them costs to replace. That matters in this category more than most, because the wearing parts are the parts that decide whether the product is still in service in March.
The second is what happens when something goes wrong at the destination. A defect that traces to a single component is a component we stock, and it rides in the next container at the cost of the part rather than at the cost of a replacement unit. A distributor who cannot supply a consumable loses the next appliance order along with the goodwill.
The third is the ability to say no. We will decline an ultrasonic build for a hard-water market without the cartridge, because that configuration produces a return rate rather than a reorder, and a factory that can change the build is the only kind of supplier that can give that answer honestly. The WL-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
Market access for this product is mostly a documentation exercise, and the mapping is stable. Europe wants the CE technical file, an EMC report and IEC 60335-1. North America adds FCC documentation for the digitally controlled models. Japan and Korea issue against PSE and KC, Australia and New Zealand against RCM, and all four want the certificates to name the model being shipped.
The second thing worth knowing is what a certificate does not cover. It does not cover the water path, and a clinical or childcare buyer will ask about that before it asks about EMC. We hold a material declaration for every wetted part - tank, seal, disc and outlet - and it is the document that most often decides a hospital order.
The third is the battery overlay. Where a cell is fitted, UN38.3 and IEC 62133 sit on top of everything else and add a step at freight booking. For a buyer shipping to several markets at once, the cheapest route is to declare the full destination list at quotation stage so the documentation is raised once, in one package, rather than market by market as each order lands. For this configuration that means 14.5 mL per hour at 18.1 dB, holding 17.2 hours per fill across a 8 sq m (85 sq ft) room.
Order sizing in this category is a volume question before it is a quantity question, because the units differ in size by more than an order of magnitude across the range. A master carton of this model holds 60 units at 0.046 cubic metres, which puts roughly 27,420 units in a 20 ft container and 60,360 units in a 40 ft container on a pure volume basis.
That figure is the starting point, not the answer. Palletisation, loading losses and the mix of SKUs in the container all pull it down, and a mixed container across three SKUs will not hit the single-SKU number. We run the mix with the buyer before quoting freight, because the difference between a planned and an unplanned container is usually one extra shipment a season.
The second sizing decision is the spares ratio, which most first-time buyers set too low. One spare disc per twenty units and one cartridge per unit on hard water is the ratio that prevents the awkward second shipment, and the parts are cheap enough that over-ordering them costs less than the freight of a top-up. The WL-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
What is the minimum order quantity for a first smart humidifier order?
MOQ is 200 units per SKU for standard builds and 300 units for custom colour or private-label packaging. Mixed-container orders combining several models are accepted as long as each individual SKU clears its own minimum. The specification table on this page shows the exact build we ship for WL-SM07M-PLUS.
How is the noise figure measured, and what does it mean in a bedroom?
We measure at one metre in a semi-anechoic corner and quote the step, so the two published figures for WL-SM07M are 20.8 dB on the high step and 18.1 dB on the sleep step. The sleep-step figure is the one to compare, because it is the step a bedroom unit is left on all night. A buyer can repeat the measurement in a quiet room with a phone application and will get within a decibel or two.
Does this humidifier leave white mineral dust on furniture?
It depends on the water and on the misting method, and it is the single largest cause of returns in this category. An ultrasonic disc throws everything dissolved in the water into the air, so on a hard supply it leaves a fine white mineral film on dark surfaces within days. Two answers exist: a demineralisation cartridge in the tank, which is a consumable with a real working life, or an evaporative build where the minerals stay in the wick. This unit is specified as cartridge not fitted at this size; distilled water is the answer.
Which compliance files ship with a smart humidifier order?
The standard file set is the CE technical file, RoHS and REACH declarations, an EMC test report, the IEC 60335-1 household appliance safety report, and for battery builds a UN38.3 test report with an IEC 62133 cell report and MSDS. For North America we add FCC documentation for the digitally controlled models. Certificates are issued against WL-SM07M, the model code on the order, rather than against a generic family.
Can we sell these under our own brand, with our own packaging?
Yes. Private label covers housing colour, logo placement, retail artwork, manual language and the accessory kit, and most of it sits inside existing tooling for this range, so customisation does not mean re-engineering. The decision we ask buyers to make early is which consumables travel with the appliance, because a unit sold without a cartridge into a hard-water market generates complaints that no artwork will fix.
Does the unit keep holding its target if the router drops or the internet is down?
Yes, and this is the question we would ask first if we were buying. The target and the schedule are stored on the unit rather than in the cloud, so the network is a convenience and not a dependency. With the link down WL-SM07M keeps running the closed loop to the last target set, target band 40 to 70 percent in 5 percent steps, held within 4 percent, and the local panel still sets every step. When the connection returns the log backfills, which matters because the useful part of a trace is the part when nobody was watching. The link on this build is Bluetooth Low Energy to the phone, no router needed, and Phone becomes the display: target, step and a two to eight hour timer.
What warranty and spares support do you provide?
12 months against manufacturing defect on WL-SM07M. Misting discs, wicks, cartridges, seals and cells are stocked as separate line items and can ride in the same container as the units, which is the cheapest way to buy them. We suggest one spare disc per twenty units and one cartridge per unit where the water is hard.
How long does sampling and first production take?
Samples ship in 5 to 7 working days from an existing specification, or 15 to 20 days if a custom colour is required. First production runs in 25-35 days depending on SKU and quantity, measured from order confirmation and deposit, with the exact figure stated on the proforma invoice rather than left open. Battery shipments add a documentation step at booking.
This is a programme for buyers who intend to reorder. The first order is rarely the profitable one for either side; what makes it worthwhile is a range that can be relisted next season without a new test round, a spares line that keeps customers, and a consumable that brings them back.
It suits distributors building an air-treatment shelf, brand owners who want a chassis they can put their own artwork on, pharmacy and home-care groups planning a consumable line, hospitality groups standardising across several properties, and cross-border sellers who need prep done before the container moves.
It suits less well anyone whose only criterion is the lowest unit price, because the price difference between a well-built unit and the cheapest one on the market is smaller than the cost of the returns it prevents. The WL-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
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-SM07M (PLUS) packs 60 units to a carton, carries a 12 months warranty and a 25-35 days stated lead time, and draws 2.1 W on the high step.
If there is one thing to take from this page, it is that the held target and the water answer are the two that decide the return rate, and both can be checked before an order is placed. Measure the noise on the step people sleep on, and put the unit on the water it will actually be sold with.
Everything else - output, coverage, run time, documentation - is measurable and published here so it can be verified rather than taken on trust. Where the answer depends on the room we say so rather than quoting a number that only holds in a laboratory.
Wanlin supplies this range as a manufacturer and is open to partnership with distributors, brand owners, pharmacy and home-care groups, hospitality and facilities buyers, cross-border sellers and export traders. Samples, specification sheets and certificates are available on request. On the WL-SM07M (PLUS) the figures worth carrying into the next order are the 250 mL tank, the 17.2 hours per fill on the low step, and the 18.1 dB reading on the sleep step.
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
