1. 4 ways to unlock: Unlock(optional), APP Access Control, Fingerprint Unlock, PIN Code Unlock; 2. Convenient APP management system, you can manage your Smart Key Storage Box anytime and anywhere; 3.Combination lockbox was made of high strength zinc alloy and heavy-duty steel, which can protect the box from hammering,sawing or prying,it is rust-resistance.It's a sturdy and reliable key safe box. 4.To facilitate access and ensure safety, this digital key cabinet is to keep a spare key for your home or car 5.The key safe box is made of zinc alloy and heavy-duty steel, which can protect the box from hammering, sawing or prying., suitable for outdoor;