Complete the form below and a member of our staff will be in touch within 24 hours.
Residential Sales: (800) 244-2261
Security Instrument provides home security & automation systems, installation and support in Delaware, Pennsylvania, Maryland and New Jersey.
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.