Closed Saturday! In need of a locksmith? Call Security Locksmith, a fast and trustworthy locksmith serving Brooklyn, NY. We are open 24 hours Sunday- Friday and closed on Saturdays. We handle all your Residential and Commercial needs focusing on security systems. We make Alarm, Intercom, and C.C.T.V Systems. Thank you for trusting us with your problems, we promise to get the job done correctly and in a timely manner.