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Commercial Sales: (800) 244-2261
Security Instrument is the largest privately owned commercial security company in Delaware. We design, install and support integrated systems for SMB’s and enterprises throughout Delaware, Pennsylvania, New Jersey and Maryland.
Wilmington, DE Office
309 West Newport Pike
Wilmington, DE 19804
Phone: (302) 633-5621
Milton, DE Office
28340 Lewes Georgetown Hwy.
Milton, DE 19968
Phone: (302) 645-2212
Security Instrument is Delaware’s largest full-service independently-owned security firm with over 75 employees serving thousands of customers throughout Delaware, Pennsylvania, New Jersey and Maryland.