The Master Lock Bluetooth Keyless 4400D is a 1-29/32-inch wide metal indoor padlock that uses a smartphone and the Master Lock Vault app for keyless operation. It features a boron alloy steel shackle for cut resistance, a CR2450 battery with an average 2-year life, and the Master Lock Vault Home app for features like guest access sharing and access history.
Master Lock Bluetooth Keyless 4400D
Key Specifications
- Lock Body: 1-29/32-inch (47mm) wide metal body
- Shackle Material: Boron alloy steel
- Shackle Diameter: 9/32-inch (7mm)
- Shackle Vertical Clearance: 7/8-inch (22mm)
- Power Source: 1x CR2450 battery
- Battery Life: Average 2-year life in Touch Unlock Mode
- Connectivity: Bluetooth
- Application: Requires the Master Lock Vault app (iOS and Android)
Features
- Keyless Access: Your smartphone acts as your key via the app.
- Master Lock Vault Home App: Allows you to support up to 10 locks for personal use.
- Shared Access: You can share access to the lock with others through the app.
- Access History: Monitor who has accessed the lock and when.
- Low Battery Notifications: Receive alerts in the app when the battery is low.
- Backup Access: A directional code can be used to back up access directly on the lock's keypad.
- Anti-Shim Technology: Provides maximum security against unauthorized opening.
- Indoor Use: Designed for indoor applications like lockers and cabinets.






















