Signals Defense
Signals Defense, founded in 1999 and headquartered in Owings Mills, MD, designs, manufactures, and installs proprietary RF/IR attenuating window films and shielding building materials for US Government, DoD, Intelligence Community SCIFs, and Fortune 100 corporations; the company was acquired by Lockmasters in 2026.
- Company typePrivate
- Founded1999
- HeadquartersOwings Mills, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Signals Defense does
Signals Defense, LLC is a privately held specialty manufacturer and installer founded in 1999 and headquartered in Owings Mills, Maryland. The company designs, develops, and installs proprietary RF (Radio Frequency) and IR (Infrared) attenuating window films and complementary building shielding materials for secure work environments, SCIFs (Sensitive Compartmented Information Facilities), and commercial buildings. Its core product lines are the patented SD series films (SD2500/SD2510, SD1000/SD1010, SD500), rFoil Ultra NT radiant barrier, RF shielding paint/tapes/caulk, Spray-Lock SCIF barrier adhesive, DAS Shield in-building wireless film, and glass/polycarbonate laminates. The technology is engineered to meet TEMPEST requirements for Intelligence Community Directive ICD 705, CNSSI 7003, and DoD Infrared and Radio Frequency Emanation Protection Standards.
Signals Defense makes money primarily through one-time product sales plus professional installation services on a project basis, with quote-based pricing that varies by scope, square footage, film specification, and bundled services. The go-to-market combines direct enterprise field sales targeting US Government agencies (DoD, Intelligence Community), Fortune 100/500 corporations, and select commercial segments (healthcare, education, transportation, entertainment venues), supplemented by international dealer partnerships in 8 countries (Australia, Canada, Germany, Israel, New Zealand, South Korea, Turkey, United Kingdom), specialty distribution via JLM Wholesale into the commercial glass and glazing channel, and ecosystem partnerships with Eastman Chemical (co-development), AIT (glass laminates), Covertech (rFoil distribution), and iBWave Solutions (IBW planning software integration). As of 2026, Signals Defense operates as a subsidiary of Lockmasters, a security industry company founded in 1955.
The company has deployed its SD technology across more than 3,000 locations, including over 1,800 SD2500 projects, and operates with a workforce of 11-50 employees. Its customer base is heavily concentrated in US Government, Defense, and Intelligence Community accounts, with Fortune 100 corporations as the secondary enterprise segment. Revenue figures are not publicly disclosed, and the company has not raised external funding.
Signals Defense firmographics
Firmographics- Name
- Signals Defense
- Legal name
- Signals Defense, LLC
- Website
- https://signalsdefense.com
- Company type
- Private
- Founded year
- 1999
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Signals Defense, founded in 1999 and headquartered in Owings Mills, MD, designs, manufactures, and installs proprietary RF/IR attenuating window films and shielding building materials for US Government, DoD, Intelligence Community SCIFs, and Fortune 100 corporations; the company was acquired by Lockmasters in 2026.
- Ownership category
- akta.pro rank
Signals Defense industry classification
Industry- Product category
- Security Window Films
- NAICS
- Security Systems Services (except Locksmiths) (561621)
- SIC
- Unsupported Plastics Film & Sheet (3081)
- akta.pro primary industry
- Military Power Supplies, RF/Microwave Components & Ruggedized Electronics (IMABAGAJ)
- akta.pro secondary industry
- Window Films & Tinting Retail (Privacy, UV, Decorative Films) (CRAIAKAJ)
Keywords
Where Signals Defense is headquartered
LocationHeadquarters
- HQ city
- Owings Mills
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Signals Defense business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Supply Chain, Technology or R&D, Operations, Marketing or Sales
Revenue model
- RF/IR Shielding Window Film Products: Sale of proprietary SD series RF/IR window films (SD2500, SD2510, SD1000, SD1010, SD500) and DAS Shield products for security and in-building wireless applications. Films are sold with installation services for enterprise government and commercial clients.
- RF Building Materials: Sale of RF shielding materials including rFoil radiant barrier foil, RF shielding paint, RF shielding tapes, RF shielding caulk, and Spray-Lock SCIF Barrier Adhesive for complete building shielding solutions.
- Installation and Professional Services: In-house installation crews provide professional installation of window films and building shielding materials. Project management services for commercial and government facility projects.
- Architectural Window Films: Decorative, solar control, and safety/security window films from manufacturers including 3M, Llumar, and Solyx, offered as part of comprehensive window film solutions.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion2 records
Distribution channels4 records
Marketing channels7 records
Signals Defense product offering
Product offeringCore offering
Signals Defense designs, develops, and installs specialized films for buildings for UV protection, RF/IR shielding, and security. The company specializes in RF/IR shielding window films for SCIFs (Sensitive Compartmented Information Facilities) and other secure work environments, with products engineered to meet TEMPEST, ICD 705, and DoD specifications. Offerings span window films, laminates, paint, sealants/tapes, and shielded doors, delivered with installation services for classified and high-security facilities.
Product overview
Signals Defense is a proprietary product technology company specializing in RF (Radio Frequency) and IR (Infrared) shielding solutions for secure work environments, SCIFs (Sensitive Compartmented Information Facilities), and commercial buildings. The core product portfolio centers on patented RF/IR attenuating window films (SD2500/SD2510, SD1000/SD1010, SD500), complemented by a comprehensive range of RF shielding building materials including rFoil Ultra NT Radiant Barrier foil, RF shielding paint, tapes, caulk, and Spray-Lock adhesive. The company also offers DAS Shield window film for in-building wireless optimization, architectural window films (decorative, safety, solar control, cloaking), RF/STC specialty doors, and glass/polycarbonate laminates with embedded shielding technology. Window treatments from third-party manufacturers complete the offering. All products are designed to meet TEMPEST standards, ICD 705 requirements, and DoD Infrared and Radio Frequency Emanation Protection Standards for government and intelligence community facilities.
Differentiator
Problem solved
Functional benefit
Brands
- DAS Shield: Window film product designed to attenuate external RF interference for in-building wireless systems performance.
- SD2500/SD2510
- SD1000/SD1010
Products and services
- SD2500/SD2510 RF/IR Shielding Window Film
Quantifiable outcome
- DAS Shield attenuates external RF signals by more than 30 dB across the 100 MHz–12 GHz band
- +3 more outcomes
Companies that use Signals Defense
Customer profileNamed customers5 records
Segments8 records
Ideal customer profiles2 records
Signals Defense technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
Feature6 records
Signals Defense partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered core and minor.
- LockmasterscoreLockmasters has been providing safe locks, tools, commercial hardware, specialty doors, and education to the government and security professional industry since 1955. Signals Defense is now part of Lockmasters, combining expertise in physical security and RF/IR shielding technology.
- Eastman ChemicalcoreEastman is a global advanced materials company and co-developer of the RF/IR attenuating 'SD' window film products with Signals Defense. Founded in 1920, Eastman has approximately 14,500 employees and serves customers in more than 100 countries with 2019 revenues of approximately $9.3 billion.
- AIT (The AIT Group)coreAIT is a world leader in manufacturing and supporting architectural, security, ballistic, blast, impact, and decorative glass laminates. They specialize in producing advanced combinations of materials for design and security needs.
- Covertech Fabricating Inc.coreCovertech Flexible Packaging provides innovative insulation solutions from their 107,000 ft facility in Toronto, Canada. Signals Defense is an authorized distributor of Covertech's Ultra NT rFoil radiant barrier products for SCIF and secure environments.
- JLM WholesaleminorJLM is a leading specialty wholesale distributor of commercial door hardware and security solutions selling primarily into the commercial glass and glazing market, serving door and hardware distributors, security integrators, and glass and glazing contractors.
Scale indicators5 records
Recent moves6 records
Expansion highlights5 records
Signals Defense competitors and assessment
Company assessmentDirect peers
- Madico Window Films: US-based manufacturer of safety, security, and solar control window films directly comparable to Signals Defense's SD-series security and architectural films. Competes for the same enterprise, government, and architectural glazing specifications.
- Hanita Coatings: Israel-headquartered manufacturer of high-performance window films including security and ballistic-shielding lines, supplying defense, government, and architectural markets. Closely comparable technology stack and use cases to Signals Defense's SD films.
- Solar Gard (Eastman): Specialty window film brand owned by Eastman Chemical offering safety, security, and solar-control films. Competes with Signals Defense in architectural and commercial security film projects and benefits from Eastman's material-science scale.
- Johnson Window Films: US manufacturer of architectural and safety/security window films including lines designed for blast and forced-entry protection, competing with Signals Defense's SD and security film products in commercial and government projects.
Broad incumbents
- 3M (Window Film / Safety Solutions): Diversified industrial conglomerate with a window film and safety/security film franchise (e.g., 3M Ultra S800). Competes with Signals Defense in commercial and architectural security films and dwarfs it in distribution scale and brand recognition.
- Eastman Chemical Company: Global specialty materials company and co-developer of Signals Defense's SD films via Eastman/Solutia (LLumar) capabilities. A much larger incumbent across architectural, automotive, and security film markets — both a partner and a competitive force.
- Saint-Gobain: Global building products company with laminated security glass, ballistic glazing, and architectural films overlapping with Signals Defense's glass and polycarbonate laminate and security film offerings for government and commercial facades.
Emerging players
- ETS-Lindgren: Specialist in RF shielded rooms, enclosures, and EMC testing chambers — addressing the same SCIF and secure-facility buyer but with turnkey shielding enclosures rather than architectural films. A natural alternative approach to the same TEMPEST problem.
Others
- Parker Chomerics: Supplier of EMI/RFI shielding materials, conductive coatings, and gaskets for electronics enclosures. Competes at the materials level for shielding-driven projects but does not offer architectural window films — adjacent technology relevant to SD's RF shielding roadmap.
- Holland Shielding Systems: European manufacturer of EMI/RFI shielding products including conductive tapes, paints, and films. Overlaps with Signals Defense's RF shielding paint/tapes/caulk line and serves similar government and industrial EMC customers.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Signals Defense social profiles
Digital presenceSignals Defense compliance and trust
Trust signalCompliance6 records
Signals Defense financial estimates
Financial estimateRevenue estimate
Valuation estimate
Signals Defense leadership team
Management profileNumber of profiles
Profiles4 records
Signals Defense funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Signals Defense M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Signals Defense
What does Signals Defense do?
Signals Defense designs, develops, and installs specialized films for buildings for UV protection, RF/IR shielding, and security. The company specializes in RF/IR shielding window films for SCIFs (Sensitive Compartmented Information Facilities) and other secure work environments, with products engineered to meet TEMPEST, ICD 705, and DoD specifications. Offerings span window films, laminates, paint, sealants/tapes, and shielded doors, delivered with installation services for classified and high-security facilities.
Is Signals Defense a public or private company?
Signals Defense is a private company. It is classified as corporate owned and is currently operating.
When was Signals Defense founded?
Signals Defense was founded in 1999. It employs 11 to 50 people.
Where is Signals Defense based?
Signals Defense is headquartered in Owings Mills, United States, in the North America region.
How does Signals Defense make money?
Four revenue lines are on record. RF/IR Shielding Window Film Products are the primary driver. The others are RF Building Materials, installation and Professional Services and architectural Window Films.
Who are Signals Defense's main competitors?
Direct peers on record are Madico Window Films, Hanita Coatings, Solar Gard (Eastman) and Johnson Window Films. Broad incumbents are 3M (Window Film / Safety Solutions), Eastman Chemical Company and Saint-Gobain. ETS-Lindgren is listed as an emerging player. Others are Parker Chomerics and Holland Shielding Systems.
Does Signals Defense have an API?
No public API is recorded for Signals Defense.
What industry is Signals Defense in?
Signals Defense's product category is Security Window Films. Its primary akta.pro industry code is IMABAGAJ, Military Power Supplies, RF/Microwave Components & Ruggedized Electronics, with a secondary code of CRAIAKAJ, Window Films & Tinting Retail (Privacy, UV, Decorative Films). Its NAICS code is 561621 and its SIC code is 3081.