The outdoor version of the Electronic Knob is designed for exterior installation and provides secure. keyless access to family homes or other outdoor areas – even in exposed environments. It features IP66-rated protection. ensuring resistance to dust. rain. and harsh weather. As the core component of the 2N Fortis Cylinder. it’s fully compatible with all cylinder types in the 2N Fortis range. including Euro profile and Scandinavian oval profiles. Supplied with batteries included. it’s ready for immediate deployment.