Can I put the Gainsborough Freestyle Smart Wi-Fi Trilock on an aluminium door? Yes, but there is potential for reduced functionality due to the signal interference caused by the Aluminum doors. Related articles What is Gainsborough Freestyle Smart Wi-Fi Trilock? Do I need to install the door sensor? What does it do? How do I clean & maintain my lockset? I am trying to set up my lock and the Freestyle app is not picking up the lock. What do I do? How do I install the magnetic door sensors?