Master Lock 4400EC Bluetooth Lock

Master Lock 4400ENT Bluetooth Padlock: Master Lock No. 4400ENT Indoor Bluetooth Lock Eliminates Keys & Keys Management. Your Smartphone IS the KEY! Master Lock 4400ENT Bluetooth Lock  Use Your Smartphone to Open and Manage Door with Master Lock Vault App Includes Master Lock Vault Enterprise IOS / Android App and Web Interface, Designed for Business Applications Working with Many Locks and Many Users Secure Door Access: Only Authorized Devices Can Enter; Grant or Revoke Access Backup Access Using Direction Code on Lock Keypad Share Access with Others - Either Temporary or Permanent Audit Trail Keeps All Data & History; Easy to Replace CR2450 Battery Low Battery Notification and Reminder on Padlock and in IOS / Android App Battery Jump Allows for a Temporary Access if Battery Dies While Locked Specs_Width: 1-29/32" Wide; A: 5/16" (8mm) B: 1" (25mm) C: 1" (25mm) Best Used Indoors For: School Lockers, Employee Lockers, Athletic Lockers, Indoor Storage Lockers; Sheds, Workshops & Garages; Tool Trunks, Tool Boxes & Tool Cribs; Self-Storage Units & Lockers