BLS Active shield for BLS Zer0 32 Active masks

The Narvalo Active Shield is the innovative air extraction valve for FFP3 masks developed by Narvalo, a start-up and spin-off from Politecnico di Milano, with BLS and POLIHUB. This smart valve ensures optimal breathing comfort, thanks to an adaptive fan that reduces heat and humidity and extracts CO2 ensuring maximum freshness during use.

SMART VENTILATION

The adaptive ventilation system extracts the CO2 produced during breathing by reducing heat and moisture retained inside the mask. Thanks to the pressure sensor, Narvalo Active Shiled modulates the fan speed according to the user’s breathing frequency, ensuring constant breathing comfort even during strenuous activities.

LITHIUM BATTERY

The lithium battery (800 mAh) gives the device up to 5 hours of autonomy and it is easily rechargeable via the micro USB charging socket on the side of the device.

RESISTANCE TO DUST AND LIQUIDS

Narvalo Active Shield device is designed to resist dust and liquid contaminants, achieving IP 53 certification.

Only Zer0 32 Active masks are suitable for use with the Active Shield. These are available via item:

• A51284
• A51285: with activated carbon