Master Lock Bluetooth Electronic Padlock

Are you tired of obsolete padlocks that need to memorize combinations or carry an extra key? Master Lock has the solution! The 4400D Bluetooth Master Lock padlock can be unlocked in seconds with your smartphone. You can even give temporary or permanent access to the people you trust without having to share passwords or combinations! The 4400D also features hardened security features, such as a washer lock mechanism, metal case construction, and Bluetooth encryption.

The Master Lock 4400D is the standard model for the "inside" of this Bluetooth lock. However, the 4401DLH is the "outdoor" model, which is a bit more durable and last longer with a single battery.