Open your door now with a transponder key! Simply hold it up to the lock. A key is no longer needed, eliminating the risk of accidentally locking yourself out. The lock can also be opened using a PIN code or conveniently via a smartphone app. With the ZigBee Gateway app, you can manage access control even worldwide and open the door directly—simply using your smartphone or tablet. Create and share access codes and track openings. Up to 9 user PINs can be stored, allowing easy access for all authorized individuals. The high-quality locking cylinder is durable, robust, and can withstand almost anything. The knobs are made of stainless steel.