LOCK BOX APPLICATION: for indoor and outdoor use i.e. on fences, gates, rails or more ; the shackle key safe has a large internal cavity and can secure multiple keys and access cards MASTER LOCK VAULT HOME APP: new version free app for Android and iOS to manage and schedule the key safe access, monitor activity, receive tamper and low-battery alerts (no fees and no long-term contracts) EASE OF USE: use your smartphone to unlock wireless lock box or enter numerical code on lock keypad for easy backup without smartphone SHARED ACCESS: share temporary or permanent access via Bluetooth or keypad code with invited guests - care takers, home workers, family or roomates FLEXIBLE SOLUTION: connected key safe ideal for Airbnb, home rental, collective ownership as there is no need to fix it on the wall