Sonoff · SAWF-08P

Sonoff AirGuard CO2 SAWF-08P air quality monitor with Matter over Wi-Fi

Name: Sonoff AirGuard CO2 SAWF-08P air quality monitor with Matter over Wi-Fi
Brand: Sonoff
SKU: SONOFF-SAWF-08P
Price: 1499 MDL
Availability: InStock

1,499 MDLIn stock

Carbon dioxide CO₂ monitors

Matter

Wi-Fi

Manufacturer images

1,499 MDLIn stock

Buy with installation

Check compatibility

Measured parameters: CO₂, Temperature, Humidity
CO₂ sensor type: NDIR (infrared)
On-device display: Segment LCD

That heavy-headed feeling after hours in a closed room usually points to CO2 build-up, and the AirGuard CO2 tracks it with an NDIR sensor refreshing every 5 seconds.

No separate hub required

Connects to the router over Wi-Fi and is added directly in eWeLink. Apple Home, Google Home, Alexa and SmartThings via Matter need that platform's Matter controller (hub), as the product page states.

Source ↗

Hubs and systems: compatibility and limitations 5

AlexaConditional
Connection: Matter
Matter compatibility; available functions are listed in the manufacturer matrix.
Supported functions: Temperature value · Voice query
Unsupported functions: CO₂ concentration value · Humidity value
Google HomeSupported
Connection: Matter
Matter compatibility; available functions are listed in the manufacturer matrix.
Supported functions: CO₂ concentration value · Temperature value · Humidity value · Voice query
Apple HomeSupported
Connection: Matter
Matter compatibility; available functions are listed in the manufacturer matrix.
Supported functions: CO₂ concentration value · Temperature value · Humidity value · Voice query
SmartThingsSupported
Connection: Matter
Matter compatibility; available functions are listed in the manufacturer matrix.
Supported functions: CO₂ concentration value · Temperature value · Humidity value · Voice query
Home AssistantConditional
Connection: Matter
Matter compatibility; available functions are listed in the manufacturer matrix.
Supported functions: CO₂ concentration value · Temperature value · Humidity value
Unsupported functions: Voice query

36 specifications from manufacturer documents

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

The right choice starts with specifications

Device passport

SKU: SONOFF-SAWF-08P · Document model: SAWF-08P

Specifications checked against the linked manufacturer documents.Checked 18 October 2026

Measurement and detection10

Measured parameters — what it means Which values the monitor measures with its own sensors. Data the app pulls from the internet (such as outdoor air quality) is not included.	CO₂, Temperature, HumidityOutdoor air quality (AQI) is pulled from the internet by the eWeLink app for the user's city to give tips; the monitor does not measure it [1]
CO₂ sensor type — what it means NDIR and photoacoustic sensors measure carbon dioxide itself. Calculated eCO₂ is estimated indirectly from volatile compounds in the air and can differ from the real CO₂ concentration.	NDIR (infrared)"Built-in NDIR Sensor" per the official product page [2]
CO₂ measuring range, ppm — what it means The concentration span over which the monitor shows CO₂, in ppm (parts per million). Outdoor air is usually about 400–450 ppm; in a living room values above 1000 ppm usually mean the air needs refreshing.	400–5000"CO₂ detection range 400~5000ppm" on the specification image of the official product page; the same value is on the "High Accuracy & Fast Response" image. The text spec tables do not list the range [3]
CO₂ accuracy — what it means The permitted error per the specification. ±(50 ppm + 5 %) means that at a reading of 1000 ppm the real value lies roughly between 900 and 1100 ppm.	±(50 ppm + 5 %)The specification image writes "±50ppm±5%" [1]
Reading update interval — what it means How often the monitor measures the air again and refreshes its readings. With a short interval the effect of airing the room shows sooner; battery models usually use a longer interval to save charge.	5 sMaker FAQ: CO₂ concentration updates every 5 seconds (continuous USB power) [1]
CO₂ calibration — what it means NDIR readings drift over time, so the sensor is calibrated. Automatic calibration takes the lowest value of the past few days as the fresh-air level and relies on regular airing; manual calibration is started with a button or in the app while the monitor sits in fresh air.	Not stated by the manufacturer
Temperature accuracy, ± — what it means The largest deviation of the temperature reading from the real value, per the manufacturer's specification.	0.5 °C±0.5 °C (±1 °F) [1]
Humidity accuracy, ± — what it means The largest deviation of the relative humidity reading, in percentage points, per the manufacturer's specification.	3% [1]
Temperature measuring range	0–50 °C [3]
Humidity measuring range — what it means The range over which the probe measures relative humidity (% RH). Not applicable to temperature-only probes.	5–95%Non-condensing [3]

Control and features6

On-device display — what it means Whether the device shows the current CO concentration as a number. Without a display, gas is reported only by the siren, indicator and app; a display also shows a rise in concentration that has not yet reached the alarm level.	Segment LCD3.73″ LCD (per the product page image): large CO₂ reading in ppm, temperature and humidity below, buzzer and Wi-Fi icons [1]
Alert methods — what it means How the monitor signals that a value has crossed the threshold. Sound and light come from the device itself; a push notification reaches the phone through the app.	Sound alarm, indicator light, app push notificationThresholds for CO₂, temperature and humidity are set in eWeLink; a Do Not Disturb mode covers the buzzer and light, and the light brightness is adjustable. Default indicator colours: green ≤ 1000 ppm, yellow ≤ 1500 ppm, red ≥ 1501 ppm [1]
Screen size	3.73″Shown on the "Real-time CO₂, Temp & Humidity Tracking" image of the official product page [5]
CO₂ indicator levels	Good ≤ 1000 ppm (green), fair ≤ 1500 ppm (yellow), poor ≥ 1501 ppm (red) [4]
Default comfort levels	Dry ≤ 40 % RH, damp ≥ 60 % RH, cold ≤ 19 °C, hot ≥ 27 °C [4]
Measurement history	Up to 12 months in eWeLink: CO₂, temperature and humidity charts by day, 7 days, month and year; export one value at a time [1]

Connectivity and compatibility9

Connectivity — what it means The wireless link or network the device uses. Wi-Fi connects straight to the router; Zigbee, Thread and Bluetooth Mesh work through a hub or gateway.	Wi-Fi, Matter2.4 GHz Wi-Fi (IEEE 802.11 b/g/n), Matter over Wi-Fi. Bluetooth LE is used only for Matter commissioning [1]
Hub required — what it means Whether the device needs a separate hub, gateway or coordinator to work in a smart home. If so, it is sold separately unless stated otherwise.	Not requiredConnects to the router over Wi-Fi and is added directly in eWeLink. Apple Home, Google Home, Alexa and SmartThings via Matter need that platform's Matter controller (hub), as the product page states [1]
Matter support — what it means Whether the device supports the Matter standard, directly or through a bridge. Matter lets you add it to Apple Home, Google Home, Alexa and Home Assistant.	Native MatterMatter over Wi-Fi. Per the maker's table, CO₂, temperature and humidity are available in Google Home, Apple Home, SmartThings and Home Assistant; Alexa shows only temperature and the air-quality level (no CO₂ number, no humidity). Humidity in Apple Home needs iOS 26 or later [1]
Home Assistant — what it means How the device connects to Home Assistant: a built-in integration, a Zigbee coordinator, Matter or the maker’s cloud integration.	Native integrationThrough Home Assistant's Matter integration: CO₂, temperature and humidity; voice queries need the Home Assistant Voice speaker [1]
Works without internet — what it means Whether the device keeps working over the local network or through a hub when the internet is down. Cloud features (remote access, voice assistants) need the internet.	YesOver Matter the readings go to the Matter controller on the home network. The one-year history, tips and push notifications run through the eWeLink cloud [1]
App — what it means The maker’s app used to set up and control the device.	eWeLinkAlso Matter apps: Apple Home, Google Home, Alexa, SmartThings, Home Assistant. 12 months of CO₂, temperature and humidity history with export (one value at a time) [1]
Processor / radio chip — what it means The microcontroller or radio module inside, per the maker (for example ESP32). For firmware such as WLED and ESPHome it determines available features and whether the device can be re-flashed.	ESP32-D0WDR2-V3 [1]
Wireless standard	Wi-Fi IEEE 802.11 b/g/n 2.4 GHz; Matter over Wi-Fi [1]
Radio frequencies and transmit power	Wi-Fi 2412–2472 MHz, ≤ 20 dBm; BLE 2402–2480 MHz, < 10 dBm [4]

Power2

Power source — what it means Where the device gets its power: 230 V mains, an adapter, USB, batteries or a built-in battery.	USBPowered over a USB Type-C cable; a USB-A power adapter is not included [1]
Supply voltage — what it means The supply voltage (and current, if stated) as the maker gives it. It must match your mains or adapter.	5 V ⎓ 1 A (USB Type-C) [1]

Housing and installation5

Mounting — what it means How and where it is installed: in a wall box, on a wall or ceiling, on a DIN rail, on a table or in a socket.	Table or shelfStands on a desk on its fold-out stand. The maker advises against mounting it flush on a wall: the air vents are at the back and accuracy may suffer [1]
Housing dimensions — what it means The device’s size in millimetres as the maker states it. Check that it fits the wall box, niche or shelf.	70 × 103 × 26 mm [1]
Weight — what it means The device’s weight without packaging, per the maker.	101 gNet weight [1]
Housing material	PC + ABS [1]
Certifications — what it means Standards and certifications the maker lists for this model (for example CE, RoHS, Zigbee 3.0, Matter).	CE, FCC, RoHSFCC ID: 2APN5-SAWF08P [1]

Operating conditions2

Operating temperature — what it means The air temperature range the device is rated for. The lower limit matters outdoors, on balconies and in unheated rooms.	−10…50 °CThe temperature measuring range on the specification image is 0…50 °C [1]
Operating humidity — what it means The rated relative humidity range, non-condensing.	5–95%Non-condensing [1]

Model and version1

Colour — what it means The housing colour of this model. Other colours in the same series are separate products.	White [1]

Package contents2

Package contents — what it means What comes in the box, per the maker.	AirGuard CO2 monitor, USB cable, user manualPer the "What's in the Box?" image on the product page; a USB-A power adapter is not included [6]
Manufacturer warranty — what it means The warranty period the maker states. Confirm warranty terms in Moldova with the seller.	24 months"2-Year Hassle-Free Warranty" on the official SONOFF store page; a regional seller's warranty terms may differ [2]

Manufacturer documents

Clear purchase details

Delivery and stock

We deliver across Moldova. Availability, delivery timing and cost are confirmed with a manager before order fulfilment.

How is payment handled?

A website order is submitted for confirmation without charging your card. The payment method and final amount are agreed with a manager before payment.

Warranty and documents

The warranty is at least 12 months. The exact period and conditions for equipment and installation work are stated in the sales documents and the accepted proposal. Further support is agreed for each project.

Can I return the product?

Current conditions are published on the Return policy page. Email office@casasmart.md with your order number for the steps relevant to your situation. Statutory consumer rights continue to apply.

Delivery, payment and returns

In your home

First detect it. Then trigger the right routine.

A sensor reports measurements or events. What happens next depends on configuration and separate control devices.

See the complete solution

A bedroom with a ventilation grille on the wall and a sensor on the bedside table — An example routineThe air gets stuffy — ventilation steps up.

What to check before buying

Check the Matter controller and supported model functions; Thread may need a border router.
A temperature sensor does not measure CO₂. We check the measurement type and ventilation interface. Automation does not replace ventilation design.
Power — USB: plan it for the mounting spot.
Check Wi-Fi band, app, region and internet requirements.

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