With the secuENTRY Bridge, you can conveniently control your electronic door lock from anywhere in the world and let in visitors, children, or tradespeople. With the BURG-WÄCHTER Bridge, your electronic secuENTRY door lock goes online! How does it work? It's simple! With the secuENTRY KeyApp (free for iOS and Android), you send the unlocking signal via smartphone to the BURG-WÄCHTER Bridge. The Bridge, connected to your home Wi-Fi, sends an encrypted and therefore secure Bluetooth signal to your electronic door cylinder, which can be up to four meters away. This way, your guests can open the door! The same applies for locking.