For Everything Worth Protecting

Helping you take on the security and safety challenges you face every day.

Providing Peace of Mind for Over 100 Years

A century of empowering people to live a safer, more secure life.
 
 

Featured Products & Services

 
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Master Lock Connected Products

Whether it’s one door, one lock or thousands, Master Lock Connected Products provides unmatched security, simplicity and accountability from business to home.

 
 
Master Lock Super Bowl Commercial

SHOT HEARD ROUND THE WORLD

Our history is captured in our iconic ads from the big game - beginning with the famous "Shot Heard Round The World" commercial which is still beloved today.
woman operating a master lock 5400D Lockbox on a door knob

LOCK BOXES

Allow access to your property no matter where you are. Choose from wall-mount or portable mechanical lock boxes.
Black gloved hand trying to break in a door

Home Security Tips

Whether you're gone for the day or for a week, it's important to be prepared and know how to protect your home from invasion.

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