The Nuki Fob 2 is the ideal companion, whether on a bunch of keys or in your pocket, and ensures that your Nuki Smart Lock can be opened at the touch of a button. Installation is very easy via the Nuki App via Bluetooth and Smart Lock is then opened, up to 100 Nuki Fobs can be connected to a Smart Lock, ideal for all offices and commercial buildings that rely on the smart door locks. A Fob can be configured for up to 100 Smart Locks & if a Fob gets lost, it can be easily deleted from the app and the lost Fob is no longer able to open any Smart Lock. The Fob is battery-operated, supplied and has Bluetooth 4.0 technology with a range of up to 15m from the smart door lock, which can be opened at the push of a button.