Halo Wi-Fi Smart Lock is a keyless entry electronic deadbolt featuring SmartKey. Using the Kwikset® app, you can lock and unlock your door, program up to 250 user access codes, and receive notifications from anywhere that there's an internet connection. This single-cylinder deadbolt can be locked or unlocked by using the keypad or key from the outside as well as the turn button from the inside. The rich tones of matte black add the finishing touch to this product. The rich and warm matte black finish complements the product?s style.