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The Smartmi P1 is a compact air purifier rated by its maker for rooms of 17.5–30 m², with a particle CADR of 250 m³/h. But the model code in the title, ZMKQJHQPII, is not reconciled by the available manufacturer documentation: Smartmi’s manual lists ZMKQJHQP11 and ZMKQJHQP12. The published noise figures also conflict, and the accessible CHOICE review does not disclose its detailed test results. Treat the figures below as attributed specifications, not proof of independently verified performance.
Which Smartmi P1 model does this review cover?
The exact string “ZMKQJHQPII” appears in the title of CHOICE’s review, but Smartmi’s manual identifies the P1 variants as ZMKQJHQP11 and ZMKQJHQP12. The available official material does not establish whether these are equivalent identifiers, a regional variation, or a transcription difference. Do not assume the codes are interchangeable when checking a listing or replacement filter.
CHOICE marks its Australian listing discontinued. Smartmi’s US product page still lists the P1, so availability depends on the market; the Australian status does not establish that the product is discontinued everywhere. CHOICE’s review page exposes some specifications, but restricts its expert rating and detailed test results to members.
What are the P1’s published specifications?
Smartmi’s US product page and its manual differ slightly on dimensions and noise. The table preserves each source’s figures rather than combining them. CADR figures are manufacturer-published specifications, not independent results established here.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
| Measure | Smartmi US product page | Smartmi manual |
|---|---|---|
| Particle CADR | 250 m³/h | 250 m³/h |
| Pollen CADR | 150 cfm | 150 cfm |
| Dust CADR | 130 cfm | 130 cfm |
| Smoke CADR | 120 cfm | 120 cfm |
| Recommended area | 17.5–30 m² | 17.5–30 m² |
| Dimensions | 220 × 362.5 mm | 220 × 360.5 mm |
| Approximate weight | 3 kg | 3 kg |
| Rated power | 30 W | 30 W |
| Noise | 19–49 dB | 30–60 dB(A) |
| Wireless network | Not stated | 2.4 GHz Wi-Fi |
Smartmi also claims the P1 captures 99.97% of particles above 0.3 microns and 99.98% above 0.08 microns. Those are manufacturer claims; they should not be read as independent test findings. The manual specifies 24 V rated voltage. Smartmi’s US product page and the P1 user manual are the sources for the respective columns.
How loud is the Smartmi P1?
There is no single reconciled noise range in the published material: Smartmi’s product page gives 19–49 dB, while its manual gives 30–60 dB(A). The sources do not explain the measurement conditions or why the figures differ. Since the units and conditions are not established as comparable, neither range should be treated as a definitive independent measurement or used to predict exact noise in a particular room.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
What does the available independent review establish?
CHOICE’s accessible page lists specifications including a claimed 30 m² room size, 3.2 kg weight, dimensions of 36 × 22 × 22 cm, claimed dust CADR of 255 m³/h, and an A$299 price. It also lists a replacement-filter cost of A$59 and shows A$59 per year, alongside a 6–12 month filter interval. These are CHOICE page entries, not a substitute for its withheld test results; the accessible material does not establish a performance score, ranking, measured noise, or individual dust, smoke, VOC, and ease-of-use outcomes.
CHOICE also lists HEPA H13 and a claimed 99.97% bacteria/virus removal figure. Those entries do not change the distinction between a published claim and a disclosed independent result. The CHOICE page is marked discontinued for Australia.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
What should you know about filters and upkeep?
Smartmi recommends replacing the filter generally every 6–12 months, depending on daily air conditions. Its support guidance suggests a shorter interval in homes with an open kitchen, multiple pets, or indoor smoking. Confirm that a replacement is explicitly compatible with the P1 and with the exact unit you own, particularly if the model code on your unit differs from the manual’s identifiers.
Smartmi’s support instructions say to open the filter bay by turning the handle on the bottom counter-clockwise. The manufacturer sells a three-stage allergy-control replacement filter, described as having a preliminary layer for larger particles, an H13 True HEPA layer, and a pollen-focused layer. The filter page also displayed an odor-stop version in product navigation. Any price or stock status can change; the manufacturer page showed a US$39 sale price and in-stock status when accessed on October 7, 2026, not a guaranteed current or recurring price. See Smartmi’s P1 replacement-filter page and support information.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Does the P1 work with smart-home services?
Smartmi lists compatibility with Smartmi Link, Google Assistant, Alexa, and Apple HomeKit. Its setup guidance says the phone and purifier need to be on the same 2.4 GHz Wi-Fi network; the support FAQ likewise says the app connection works only on 2.4 GHz. This is manufacturer guidance, not a hands-on setup test.
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The published specifications position the P1 for a relatively small room, with a manufacturer-recommended area up to 30 m². Before buying, check the specific unit’s model code, current availability in your country, and the cost and compatibility of replacement filters. The source material does not support a comparative performance recommendation: CHOICE’s detailed results are gated, and its Australian entry is discontinued.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
