A smarter way to keep things safe
This padlock uses Bluetooth to ensure it only opens for you. You set it up by installing Master Lock’s app on your Apple or Android phone or tablet and pairing it with the lock. From then on, pressing the illuminated button on the 4400D will release its shackle – but only when your phone or tablet is close to it. You can pair more than one device, which is handy if you have kids who lose keys but are never separated from their phones. The app records who’s used the lock and notifies you if anyone else tampers with it.