Master Lock DSNRN0603PBOX Nightwatch Deadbolt with Bump Stop Cylinder, Bright Brass by Master Lock

• Locks out unauthorized keys, cleaning services, repairman, lost or stolen keys
• Single cylinder deadbolt installs like a standard deadbolt with just a Phillips screwdriver
• When the night watch feature is engaged, the lock cannot be opened from the outside, even with a duplicate key
• This lock can only be engaged or disengaged from inside the house
• Features Master Lock's exclusive bump stop advanced cylinder technology, virtually bump proof and pick proof

It's an amazing statistic, 400,000 break-ins during November and December. Many of those are the result of shared or distributed keys. Whether it's the neighbor, the dog sitter, the plumber or your contractor, there are keys floating out there and anybody can get them. Changing the locks may be an option, but what a pain. Much better to enhance your lock system with a deadbolt. The night watch deadbolt from Master Lock is pretty cool. It functions like a regular deadbolt until you switch it into Night Watch mode, at which point no keys can unlock it from the outside. Use it at night to remain secure once all intended key users are home. Use it when you leave for vacation by setting it and backing out the garage door. Developed by Master Lock to respond to keyed break-ins and key bumping, a new form of intrusion, night watch is a great way to enhance your system before the rash of holiday robberies begin. It only takes 15 minutes and a Phillips head screwdriver to install.