UbiBot AQS1 - indoor air quality monitor with phone alerts

CO₂, PM1, PM2.5 and PM10 particulate matter, TVOC, temperature, humidity and pressure in one device

WiFi or 4G, RS485 port for ventilation

Works with

What the AQS1 measures

The UbiBot AQS1 is an air quality monitor for offices, schools, medical offices, restaurants and homes. It measures carbon dioxide (CO₂), particulate matter PM1, PM2.5 and PM10, volatile organic compounds (TVOC), temperature, humidity and atmospheric pressure. Readings go to the UbiBot cloud, and when a value goes above the threshold you set, the platform sends an alert by SMS, by email, in the app, via WhatsApp or by voice call.

Air quality rating and where to place the sensor

For each parameter the app shows a quality level, so you can see at once whether the problem is CO₂, dust or humidity. You set the alert threshold yourself, for example 1000 ppm CO₂, when it is time to air the room.

Place the AQS1 at the head height of a seated person.
Keep it away from windows, air vents, radiators and printers.
Set the alert thresholds once the readings have stabilised.

WiFi or 4G

The AQS1 WiFi connects to a 2.4 GHz network (802.11 b/g/n, channels 1-13). 5 GHz and company networks with WPA2-Enterprise login are not supported.
The AQS1 4G also has an LTE Cat 1 modem (with 2G and 3G) and a SIM slot, so it works where there is no WiFi.

A data SIM from a local operator works and usually costs less; in the setup you only enter the operator's APN. The UbiBot Global SIM is an option. You see the readings in the app and in the browser on the UbiBot platform.

Ventilation control and integrations

With the UbiBot SP1 smart plug (type E plug), the AQS1 switches a fan, air purifier, humidifier, heater or air conditioner on by itself when a reading crosses the threshold. For example, with high CO₂ or PM2.5 it turns the ventilation on and turns it off again when the air is back to normal.

The AQS1 has an RS485 port (5-pin screw terminal) with the Modbus RTU protocol, through which it passes its readings to an air handling unit, air conditioning or a building management system (BMS). You can also fetch the data through the API, and the AQS1 works with IFTTT, Amazon Alexa and Google Home.

App, reports and cloud

You see current readings, charts and history in the phone app and in the browser, where you also set thresholds and alerts for many devices at once. You download a report for any period as CSV (Excel) or PDF, for example a sample CSV report and a sample PDF report. The free cloud holds data from one year up to 2-3 years, depending on the number of sensors and the reading interval. You can export and delete data by date range, so the free plan is enough for as long as you use the device.

Alerts

Separate thresholds for each parameter, with readings and data upload as often as every minute. The platform sends a notification:

in the app,
by email,
by SMS,
via WhatsApp,
by voice call.

You also get an alert when the connection is lost. App and email alerts are free; SMS, calls and WhatsApp are paid in credits according to the UbiBot platform pricing.

UbiBot AQS1 specifications

Parameter	Range	Accuracy
Temperature	-20 to +60 °C	±0.2 °C (0-60 °C)
Humidity	0-100 % RH	±2 % RH (10-90 % RH)
CO₂	400-10,000 ppm	±(40 ppm + 3 %) at 400-2000 ppm
PM1, PM2.5, PM10	0-500 µg/m³	±10 µg/m³ (0-100 µg/m³), ±10 % (100-500 µg/m³)
TVOC	0-65,000 ppb	not specified by the manufacturer
eCO₂ (estimated value)	400-65,000 ppm	not specified by the manufacturer
Pressure	26-126 kPa	±50 Pa
HCHO (version on order)	0-1230 µg/m³	±37 µg/m³ or ±10 % of full scale (25 ±3 °C)

Feature	AQS1
Power	USB-C 5 V / 2 A or 12 V DC, no battery
WiFi	2.4 GHz, 802.11 b/g/n, channels 1-13
Cellular (4G version)	LTE Cat 1 with 2G and 3G, SIM slot
Wired interface	RS485 (Modbus RTU), 5-pin screw terminal
Memory	300,000 readings, sent when the connection returns
Dimensions and weight	diameter 128 mm, height 40 mm; 188 g (WiFi), 194 g (4G)
Operating conditions	-10 to +50 °C, 5-95 % RH non-condensing, indoors only
Housing	flame-retardant ABS, not waterproof

Certificates

UbiBot devices carry the CE mark and meet RoHS requirements. The manufacturer also lists market approvals such as FCC (USA), IC (Canada) and RCM (Australia).

Air quality monitoring in a city-centre office with the UbiBot AQS1

Office on a busy street

The AQS1 shows how much dust from outside gets in through the windows and ventilation.

Air quality monitoring in a classroom with the UbiBot AQS1

Classroom and lecture hall

An alert when CO₂ rises and it is time to air the room.

Air quality monitoring in a medical facility with the UbiBot AQS1

Medical office and waiting room

CO₂, particulate matter, temperature and humidity in one place, with history in the cloud.

Air quality monitoring at home with the UbiBot AQS1

Home and apartment

Particulate matter in the heating season and CO₂ in the bedroom, with an alert on your phone.

Air quality monitoring in a restaurant with the UbiBot AQS1

Restaurant and hotel

Guest comfort, and with the SP1 smart plug the ventilation or air purifier switches on by itself.

Air quality monitoring in an office with the UbiBot AQS1

Office and meeting room

An alert before the meeting room gets stuffy.

Before you buy

The AQS1 works indoors only and needs permanent power. A USB 5 V power adapter is available (see Accessories).
For CO₂ in a cold room, fruit store or warehouse hall, use the CO₂ probe (see Accessories) with a GS1 logger or an SP1 smart plug.
If temperature and humidity with a display and a battery are enough, choose the WS1 Pro.
WiFi works only at 2.4 GHz and without WPA2-Enterprise login. Check this on your company network before you buy.

Questions about the UbiBot AQS1

Does the AQS1 run on batteries? No. It needs permanent power from USB-C 5 V / 2 A or 12 V DC. If the connection drops, it stores readings in memory and sends them later.

Can the AQS1 measure outdoor air? No. It is an indoor device: it works from -10 to +50 °C without condensation, and the housing is not waterproof.

Can I order the AQS1 with a formaldehyde sensor? Yes. We order the HCHO version from the manufacturer, with no minimum quantity, with WiFi only or with WiFi and 4G. The quote gives the delivery time.

Is there a subscription for the platform? No. The free plan covers the cloud, the app, reports, and app and email alerts. Only SMS, voice calls and WhatsApp are paid.

How to buy the UbiBot AQS1

We are Omnic, the authorised UbiBot distributor in Poland, and we sell to companies and private customers in all EU countries. The AQS1 WiFi is in stock; the 4G version and the HCHO version are ordered from the manufacturer. Tell us which version you need and where to deliver, and we will send a quote in EUR. EU companies with a valid VAT number are invoiced without Polish VAT; delivery of the version in stock takes 4-5 business days, and for versions on order the quote gives the delivery time.

Get a quote or write to [email protected]. Setup is described in the AQS1 user guide (English).