Indispensable for voluntary air quality monitoring (regulatory system for monitoring indoor air quality in establishments open to the public. Decree no. 2022-1690 (Grenelle II law).

It also meets the health protocol set up by the French and European authorities to monitor CO2 indoors to combat the spread of viruses.

The Quaelis 50 is ideal for schools, crèches, educational establishments, nursing homes, social care establishments, etc.

It is also ideal for companies with a CSR or Quality of Life at Work (QWL) approach.

The Quaelis 50 is a comprehensive, high-performance and functional instrument that continuously measures and displays pollutants in rooms.

Pollutants measured:

- CO2. Measurement range: 400 to 9999 ppm. Resolution: 1 ppm. NDIR sensor. Automatic and manual calibration.

- Formaldehyde. Measuring range: 0 to 2.5 mg/M3. DART electrochemical sensor.

- Benzene equivalent. Measuring range: 0 to 3.00 mg/M3. Electrochemical sensor.

- Fine Particles PM2.5. Measuring range: 0 to 500 μg/M3. Laser sensor.

Product benefits: customisable alarms and educational smileys.

- To make it easier to read and understand the measurements, coloured educational smileys (green, yellow and red) indicate indoor air quality, alerting you when a pollutant level exceeds the thresholds and informing you of the action to take (airing out to renew the air).

- Audible alarm can be customised to the desired level. Can be deactivated.

- Visual alarm with colour display for each pollutant: the user can define the colour of the display according to the concentration level of the pollutant. In this way, the Quaelis 50 can be adapted to different European protocols and user requirements.

The Quaelis 50 is a discreet model that is easy to install and move around the room.

- LCD screen (12.5 x 6.8 cm).

- Colour digits on an intense black background ensure perfect contrast and easy readability.

The Quaelis 50 can also be used to record measurements (up to 4300 records) for indoor air quality monitoring and prevention.

Recording parameters can be customised and measurements can be saved on a Windows PC (recording software supplied).

Additional functions: temperature and humidity display.

It doesn't require Wi-Fi: practical for meeting the requirements of crèches.

Rechargeable Lithium 2200 mAh 3.7 V battery (USB cable and 230V adapter supplied).

INPI registered design.