A deadbolt lock is a strong and reliable lock usually installed to gain extra security. Unlike door knobs lock It doesn’t rely on springs which makes it very difficult to force open. The term “dead” indicates that the bolt remains stationary unless manually operated.
Single Cylinder Deadbolt
Commonly found in homes and has a keyhole on the outside and a thumbturn on the inside. Single cylinder deadbolts are popular for their simplicity and ease of installation.
Double Cylinder Deadbolt
Double cylinder deadbolt have a keyhole from both sides and it need the key to lock and unloch also from the inside. Its only downside is during emergencies as messing with the key can slow you down.
Keyless Deadbolt
The keyless deadbolt functions in the same way but it doesn’t require a physical key and instead it uses a keypad code or your smartphone. A keyless deadbolt offers lots of convenient. No more lock rekey or changing locks when you can create and cancel codes any time you want.
Deadbolt locks security level is defined by ANSI into 3 security grades
Grade 1: The highest and most secure, ideal for commercial purposes and exterior residential doors.
Grade 2: These level indicates medium level of security and mostly used for residential properties.
Grade 3: This is the lowest security level for dedbolts and it is recommended for interior doors only.
High security deadbolt locks
Mul-T-Lock and Medeco deadbolts exceed Grade 1 standards and feature strong construction, anti-drill pins and anti-pick resistant.