Master Lock Nightwatch Single Cylinder Deadbolt

The Nightwatch mechanism consists of a simple mechanical single cylinder (key from one side) deadbolt within the thumbturn mechanism. When Nightwatch is engaged, the outside cylinder cannot be used to unlock the deadbolt, not by your regular key nor by any copied key thus preventing anyone from entering your home through that door while you are there even if they have a key. The inside thumbturn can be turned to lock or unlock the deadbolt. Exceeds ANSI Grade 2 standards.

• Six way adjustable bolt 2-3/8" or 2-3/4" backset - square, radius or drive-in mechanism.
• Anti pry collar prevents prying and simplifies installation.
• Concealed mounting screws for better appearance and to prevent tampering.
• Silvabond anti-microbial protected finish.
• Fits doors up to 2" thick.
• Full 1" solid core bolt.
• BumpStop technology is a special stainless steel pin driver that prevents lock bumping and is standard in all Grade 2 Master Lock products.

Available in Polished Brass, Antique Brass or Satin Nickel finishes.