Blueair Pro AIM Air Intelligence Module Air Quality Sensor.

The Air Intelligence Module (AIM) allows you to set your purifier to auto-mode, so you never have to worry about air quality again. Your purifier will continuously monitor the indoor air quality using our most advanced sensors that register harmful particles and gases in your environment and adjust the speed setting of your air purifier accordingly. The AIM is available as an add-on accessory for the Pro M, L and XL.

Blueair Pro AIM, Air Intelligence Module, Air Quality Sensor Compatible with Blueair Pro M, Pro L and Pro XL Air Purifiers.