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Sonoff AirGuard CO2 SAWF-08P - air quality meter with LCD display - WiFi/Matter
CO2 meter with an NDIR sensor and Matter: Sonoff AirGuard CO2 shows CO2, temperature and humidity.
- Range 400 ppm to 5000 ppm and refresh every 5 s
- Audible alarm, LED and app notifications
- 365 days of measurement history with data export
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CO2 meter with alarm and a year of data logging
Sonoff AirGuard CO2 (SAWF-08P) is a WiFi air quality meter with an NDIR sensor that refreshes the CO2 reading every 5 seconds and shows it on the LCD display. The NDIR sensor, which measures infrared absorption optically, detects concentrations from 400 ppm to 5000 ppm with an accuracy of ±(50 ppm + 5 %), and the display also shows temperature and humidity.
A multicolor LED indicates air quality: green up to 1000 ppm, yellow up to 1500 ppm and red above that. When the concentration rises, the meter warns you with a buzzer, the LED and a notification in the eWeLink app, where you can view and export data from 365 days. Through Matter you can add it to Apple Home, Google Home and Alexa.
Sonoff AirGuard CO2 air quality meter
400-5000 ppm
CO2 concentration measuring range
±(50 ppm + 5 %)
CO2 measurement accuracy
5 s
CO2 readout refresh
365 days
of measurement history with data export
Is it a good choice for you?
A good choice if:
- you want to know when to open a window or switch on ventilation
- you use Apple Home, Google Home or Alexa and want to add the meter to your scenes
- you want to compare air data from several months
Consider another option if:
- you need PM2.5 and PM10 particulate measurement: this model measures CO2
Did you know?
A buzzer that won't let you forget
A single press of the button silences the alarm for 30 minutes, even if CO2 is still high. After that the buzzer sounds again, and you can switch it off permanently only with a second press.
Source: Sonoff: SAWF-08P manual
Frequently asked questions
Can I hang it on a wall?
The manufacturer does not recommend it. The air inlet openings are on the back, and a housing placed against a wall reduces measurement accuracy.
Does it have a Do Not Disturb mode?
Yes. You can switch off the LED and sound for a chosen time, e.g. at night, in the eWeLink app settings.
How do I calibrate the temperature?
Press the settings button, select the parameter with the ⇌ button and adjust the value with the + and - buttons.
Technical specification
| Parameter | Value |
|---|---|
| Manufacturer | Sonoff |
| Model | AirGuard CO2 SAWF-08P |
| Type | CO2 air quality meter with LCD display |
| CO2 sensor | NDIR, range 400 ppm to 5000 ppm, accuracy ±(50 ppm + 5 %) |
| CO2 refresh | every 5 s |
| Temperature measurement | 0 °C to 50 °C, accuracy ±0.5 °C |
| Humidity measurement | 5 % to 95 % RH, accuracy ±3 % |
| Signaling | multicolor LED, buzzer, app notifications |
| LED thresholds | green up to 1000 ppm, yellow up to 1500 ppm, red above |
| Connectivity | WiFi IEEE 802.11 b/g/n 2.4 GHz, Matter |
| Microcontroller | ESP32-D0WDR2-V3 |
| Power supply | 5 V / 1 A, USB type C connector |
| Measurement history | up to 365 days, data export |
| Operating conditions | -10 °C to 50 °C, 5 % to 95 % RH non-condensing, indoors |
| Housing | PC+ABS, white, fold-out stand |
| Dimensions | 70 x 103 x 26 mm |
| Certifications | CE, RoHS |
| Weight | 101 g |
Useful links
| Name | Value |
|---|---|
| Width | 13.5 cm |
| Height | 12.5 cm |
| Depth | 3 cm |
| Weight | 0.193 kg |
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The full delivery terms are on the page Delivery and payment.
30 days to return, without giving a reason
If the product does not meet your expectations, you have 30 days from receiving the parcel to withdraw from the contract. The product only has to be complete. The right of return belongs to consumers (a purchase unrelated to business activity).
Complaints
If the product turns out to be faulty, you can make a claim under the guarantee or the statutory warranty. We handle claims without delay, at the latest within 14 working days of receiving the report together with the goods.
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Instructions and documents
GPSR data
Product information
This product is a component intended for further assembly or prototyping. It is not a finished product within the meaning of the product safety regulations.
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