NEW in 2020! Video Monitoring & Verification
Learn MoreLatest NewsReveal video verification by Security Instrument is a loss prevention method saving companies time and significant amounts of money from theft and property damage.
INTELLIGENT BUSINESS SECURITY.
Learn MoreGet A QuoteData driven security systems that protect your enterprise from the inside out.
YOUR HOME SECURITY. YOUR WAY.
Learn MoreGet A QuoteSecurity Instrument brings elegant security & control to any home.
WIRELESS ALARM MONITORING.
Learn MoreGet A QuoteFrom the living room to the board room, our local Central Monitoring Station has your back, 24/7.
Serving DE, MD, NJ & PA
Security Instrument is Delaware’s largest full-service independently-owned security company, serving thousands of customers throughout Delaware, MD, NJ & PA.
Commercial Case Studies
From Fortune 500 to local SMB’s throughout the Tri-State area, Security Instrument integrates custom security systems to meet the needs of our commercial clients.
Customer Service
SI takes great pride in over 60 years of excellent service. When you need us, we are there, with 24 / 7 alarm monitoring and centralized local service for homes and businesses.
What Our Clients Say
Service in over 47 counties in Delaware, Maryland, New Jersey & Pennsylvania!
“Our Team here at Bayshore has utilized Security Instrument for securing our warehouses, temperature and humidity controlled Fine Art Storage and many other storage services for over 25 years! SI (as we call them) has proven to be a true partner and then some! SI has continually invested in the needed technology and the PEOPLE – the TEAM at SI is responsive and on top of things – when you get the call at 2 am about a motion sensor going off and you’re 2/3 asleep it is nice to have a professional person on the other line with accurate data.”
One Instrument, Total Security.
With over 60 years of experience in the commercial security and life safety environment, we offer a wide selection of products from some of the most trusted manufacturers in the industry. Our clients can choose from a full complement of personalized support services to back-up their system and help safeguard their people and property.
Customer Service Is Priority #1 With SI.
Security Instrument maintains a dedicated customer service team focused on delivering the most reliable, friendly, professional service and support available.
Combined with our state-of-the-art, local UL listed central monitoring center, your can rest assured that we are always available when you need us.
A Few Of Our Technology Partners
SI integrates hundreds of products from our strategic partners.
The list displayed here is a sample offering.
Delaware Offices To Serve You
Vehicles On The Road Daily
Monitoring from Delaware’s only UL and FM listed central station.
Smart Security for Total Office Automation
How Smart Security Alerts Help You Run Your Home Efficiently in September
Choosing Security Systems for Senior Citizens
Security Instrument Ranks on the SDM 100 Report
How to Design the Best Open Floor Plan for Your New Office
About Us
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.
Locations
Wilmington, DE
309 West Newport Pike
Wilmington, DE 19804
(302) 633-5621
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Milton, DE
28340 Lewes Georgetown Hwy.
Milton, DE 19968
(302) 645-2212