Built-in wifi Built-in Wi-Fi module allows Wi-Fi connection without a gateway. You can check the smart lock access records and PIN code information via the Philips EasyKey app anywhere. Remote distribution of a one-time PIN code with 30-minute validity saves more time for the visitors. No more worries about keeping them waiting at the door even if you are not at home. Intuitive fingerprint access The semiconductor fingerprint sensor integrated in to the door handle has a recognition speed of less than 0.5 s. Pressing down the handle allows one step unlock and allows fast and intuitive opening. Quiet mode The lock can be set in to quiet mode easily to not disturb your family or a sleeping baby. Safe handle mode Enable the safe handle feature to prevent the door from opening by pressing down the inside handle. This feature can prevent children and pets from accidentally opening the door. Low battery alarm An alarm will be triggered when the battery level is less than 20%. Emergency power supply The Philips DDL603E has an emergency power supply Micro-USB interface, which allows charging by the output voltage of 5V power bank.