Halo Wi-Fi Smart Lock is a keyless entry electronic deadbolt featuring SmartKey. Using the Kwikset App, you can lock/unlock, program up to 250 user access codes, and receive notifications from anywhere with an Internet connection. This single cylinder deadbolt can be locked or unlocked by using the keypad or key from the of outside as well as the turn button from the inside. The Matte Black finish provides a rich and warm complement to the product’s style.