4400EC

The Master Lock No. 4400EC Bluetooth® Padlock features a 1-29/32in (47mm) wide metal body for durability. The 9/32in. diameter shackle offers 7/8in. vertical clearance and is made of boron alloy, offering maximum resistance to cutting and sawing.

The free iOS and Android eLocks App is designed for personal use, supporting up to 10 locks

Never worry about a forgotten combination!

Share access with others - temporary or permanent

Share 24/7 access or limit to days or nights

Monitor access history & receive tamper alerts

Backup access using directional code on lock keypad

Low battery notification & reminder on padlock and in app

Comes with easy to replace CR2450 battery

Battery jump allows for temporary access if battery dies while locked

Getting Started


Add Guest


Temp Code


Register Your Lock


Replace Battery


Open Lock With Low or Dead Battery