3SI Security Systems headquarters details
- Street address
- 101 Lindenwood Drive Suite 200
- City
- Malvern
- State / region
- Pennsylvania
- ZIP / postal code
- 19355-1764
- Country
- United States
- Phone
- +1 800 523 1430
- Founded
- 1971
- Website
- 3sisecurity.com
Location map
Open in Google MapsAll 3SI Security Systems office locations
| City | State / region | Country | Type |
|---|---|---|---|
| Malvern HQ | Pennsylvania | United States | Headquarters |
Showing the headquarters of 21 recorded locations. See every location in GraphIQ →
About 3SI Security Systems
3SI Security Systems is headquartered in Malvern, Pennsylvania, United States. Founded in 1971, the company has 21 recorded locations across 6+ countries and employs approximately 250 people worldwide.
Where is 3SI Security Systems's main office?
3SI Security Systems's main headquarters office is located at 101 Lindenwood Drive Suite 200, Malvern, Pennsylvania 19355-1764, United States. This is the company's primary corporate address.
3SI Security Systems regional offices
Beyond its headquarters in Malvern, 3SI Security Systems has recorded locations in United States, Australia, Belgium, France, Mexico and United Kingdom.
3SI Security Systems contact information
The main switchboard for 3SI Security Systems headquarters can be reached at +1 800 523 1430. Official website: 3sisecurity.com.
What does 3SI Security Systems do?
Redefined Actionable Intelligence: With a fresh new look and a revolutionary purpose and mission, we are positioned to better serve our clients, partners, law enforcement, and communities with our cutting-edge technologies and real-world experience to deliver redefined actionable intelligence via an integrated platform that significantly impacts the bottom line - and, more importantly, lives. The Power of 3: At the core of the new 3Si is the Power of 3 - a comprehensive suite of solutions designed to deliver on the company’s promise of getting the Right Data to the Right People at the Right Time to contribute to a Safer World.
Frequently asked questions
Where is 3SI Security Systems headquarters?
3SI Security Systems's headquarters is located at 101 Lindenwood Drive Suite 200, Malvern, Pennsylvania 19355-1764, United States.
How many offices does 3SI Security Systems have?
GraphIQ records 21 locations for 3SI Security Systems across 6+ countries, as of October 2026.
What is 3SI Security Systems's corporate address?
The corporate headquarters address is 101 Lindenwood Drive Suite 200, Malvern, Pennsylvania 19355-1764, United States.
When was 3SI Security Systems founded?
3SI Security Systems was founded in 1971 and employs approximately 250 people.
What is 3SI Security Systems's phone number?
The main phone number for 3SI Security Systems headquarters is +1 800 523 1430.
How many employees does 3SI Security Systems have?
3SI Security Systems has approximately 250 employees (GraphIQ estimate, 2026).