Intrusion Detection and Commercial Alarm Systems for St. Louis Businesses

Tech Electronics designs, installs, monitors, and supports commercial intrusion detection systems in St. Louis that help organizations detect break-ins, deter unauthorized access, and respond to security events before they become losses.

Backed by local expertise and certified technicians, our business alarm systems are built for reliability in any commercial environment.

Our Technology Partners

Modern Intrusion Protection for a Smarter, Safer Business in the Gateway City

Since 1963, Tech Electronics has been a trusted technology partner to organizations across St. Louis and throughout the Midwest.

Today, we design and support commercial intrusion detection and business security systems, offering design, installation, monitoring, and support backed by ESA CSSI certification and NICET-certified technicians.

Our deep local roots, unmatched technical credentials, and commitment to safety make us the go-to partner for smart, scalable intrusion protection in the Gateway City.

Layered detection devices matched to every entry point, from door and window contact sensors to glass-break detection and interior motion sensors.

Flexible keypad, panel, and communicator options backed by 24/7 commercial alarm monitoring and clean integration with your other security systems.

Professional Intrusion Detection Systems in St. Louis, Missouri

For over 63 years, Tech Electronics has delivered reliable, innovative security systems to businesses across the St. Louis region. Headquartered in the heart of the city, our team supports clients in Downtown St. Louis, Clayton, Chesterfield, Kirkwood, and throughout the metro area with custom-designed intrusion detection solutions that protect people, property, and operations.

As an ESA Certified Security Systems Integrator (CSSI) and employer of NICET-certified technicians, we bring nationally recognized expertise with a local touch.

Whether you need a keypad alarm system for a single storefront or perimeter and interior protection across multiple buildings, our commercial security systems scale to your needs.

Every facility has its own vulnerabilities. Our experts assess your building entry points, ground-floor glazing, interior zones, and after-hours activity patterns, then select the right mix of detection technologies to close the gaps. And because an alarm is only as useful as the response behind it, every system we install can be backed by commercial alarm monitoring, responsive local service, and long-term support plans.

Schedule a Consultation to Equip Your Facility with Cutting-Edge Intrusion Detection.

Our team is ready to provide the answers and support you need. Reach out today!

Advanced Intrusion Detection Technology Solutions

At Tech Electronics, we design business alarm systems around your facility’s unique vulnerabilities, with layered detection that covers every entry point, inside and out.

Door and Window Contact Sensors

Perimeter security starts with knowing the moment an entry point is opened or tampered with. We install contact-based intrusion detection devices on doors, windows, gates, and loading docks that trigger an immediate alert when a protected opening is breached, giving you an early warning before an intruder moves deeper into the building.

Glass-Break Detection

Storefronts, ground-floor offices, and glass entryways are common targets for forced entry. Our glass-break detection systems respond instantly to the sound or vibration of shattered glass, ensuring that even entry points without contact sensors stay monitored around the clock.

Interior Motion Detection

Interior motion detection adds a second layer of protection by identifying movement inside secured spaces after hours. Modern sensors are designed to reliably detect unauthorized activity while reducing false alarms, so your team responds to real events instead of chasing phantom triggers.

Keypads, Arming, and User Management

Our keypad alarm solutions make daily operation simple, with intuitive interfaces for arming, disarming, and customizing security settings. Individual user codes and scheduled arming help you control who can disarm the system and when. Whether you manage a small storefront or a large facility, the system stays easy to run.

Integrated System Design

Intrusion detection works best as part of a layered security strategy. We design intrusion alarm systems that integrate cleanly with access control, video surveillance, and fire alarm platforms, so a triggered zone can automatically pull up the right camera view and notify the right people. One coordinated system instead of disconnected parts.

Serving the Greater St. Louis Metropolitan Area

Tech Electronics proudly serves the entire St. Louis metro region with localized intrusion detection expertise and fast-response support.

Whether you’re securing a multi-tenant office in Clayton or protecting a warehouse in Jefferson County, our team understands the distinct security demands of each community we serve.

St. Louis City and St. Louis County, including government, corporate, and institutional sites that require monitored protection after hours
Downtown St. Louis and the Clayton business district, where multi-tenant buildings and enterprise headquarters need entry-by-entry protection and clean tenant separation
Chesterfield, Kirkwood, and nearby suburban communities, providing scalable business alarm systems for retail, schools, and healthcare facilities
St. Charles, Jefferson, and Franklin Counties, extending full-service coverage to warehouses, contractors’ yards, and industrial sites beyond the urban core
Historic downtown and landmark districts, where older construction, ground-floor glazing, and high foot traffic call for carefully designed detection coverage
Retail corridors and commercial strips across the metro, where storefront glass and after-hours exposure make layered intrusion protection essential

Our local roots and regional scale allow us to deliver both neighborhood-level attention and multi-site consistency across your organization.

Intrusion Detection Solutions for Every Industry in St. Louis

Tech Electronics delivers business security systems tailored to the unique demands of each industry we serve. From highly regulated sectors to fast-moving public spaces, our solutions are designed to meet operational needs, compliance standards, and evolving security threats.

Healthcare

Hospitals, clinics, and medical offices protect more than property. Pharmacies, medication storage, supply rooms, and records areas all need reliable after-hours protection. Our intrusion detection systems secure these sensitive zones while integrating with the broader security platforms healthcare campuses already rely on.

Education

School buildings sit empty for long stretches of nights, weekends, and summers, which makes them frequent targets for break-ins and vandalism. We protect K-12 schools, universities, and administrative buildings with perimeter contacts, glass-break coverage, and interior motion detection, along with centralized arming and reporting for multi-building districts.

Commercial

Office buildings, corporate headquarters, and multi-tenant properties rely on our systems to protect lobbies, suites, server rooms, and shared entrances. Individual user codes and zone-by-zone design keep protection tight without slowing down daily operations.

Industrial

Warehouses, manufacturing facilities, and equipment yards face real exposure to theft of materials, tools, and copper. Our systems combine perimeter entry detection with interior coverage of high-value storage areas, built with hardware that stands up to dust, vibration, and temperature extremes.

Life Safety

Facilities supporting emergency response, including fire departments and dispatch centers, cannot afford security gaps. Intrusion detection protects vehicles, equipment, and controlled areas during the hours when crews are out on calls.

Intrusion Detection System Types: Finding the Right Solution

Choosing the right intrusion alarm system starts with understanding your entry points, your after-hours activity, and how you want alarms answered. At Tech Electronics, we design systems across four broad configurations, each able to scale as your needs grow.

Perimeter Protection Systems

Contact sensors and glass-break detection focused on doors, windows, and other entry points. A strong fit for facilities that want early warning at the building shell, before an intruder gets inside.

Perimeter Plus Interior Systems

Full-coverage designs that add interior motion detection to perimeter protection, creating overlapping layers. If one layer is bypassed, the next one catches the activity.

Monitored Alarm Systems

Systems connected to 24/7 commercial alarm monitoring, where trained operators receive alarm signals in real time and follow your response plan, including notifying keyholders and dispatching authorities when appropriate. Monitoring turns an alarm from a local noise into an answered event.

Integrated Security Platforms

Intrusion detection unified with access control and video surveillance in one coordinated environment. Alarm events automatically call up camera views and access logs, giving your team complete situational awareness from a single pane of glass.

Why Choose Tech Electronics for Intrusion Detection in St. Louis?

An intrusion detection system does more than make noise when something goes wrong. Designed well, it deters break-ins, shortens response times, and gives you confidence that your facility is protected during every unstaffed hour. Tech Electronics delivers systems built to perform in real-world St. Louis environments.

Real-Time Threat Alerts

Instant notifications the moment a zone is tripped, so keyholders and monitoring operators can act quickly and minimize risk to personnel and property.

24/7 Intrusion Monitoring

Around-the-clock monitoring detects unauthorized access attempts instantly and ensures every alarm gets a response, whether it happens at 2 PM or 2 AM.

False Alarm Reduction

Careful sensor selection, placement, and system programming reduce nuisance trips, protecting your team’s trust in the system and helping you avoid unnecessary dispatches.

Integration with Access Control, Video, and Fire

We design intrusion systems that work hand in hand with your other security and life safety platforms, creating a layered approach for rapid response and complete situational awareness.

Compliance with Local Security Requirements

Our team designs and installs systems with local requirements and industry standards in mind, and helps you keep documentation in order for insurers and auditors.

Customized, Scalable System Design

Every organization has unique security requirements. We design systems around your facility rather than forcing your facility into a package, and every system we install can grow with you.

Whether you need a single keypad system or layered protection across multiple buildings, our team designs systems that perform when it matters most.

Proven Security Projects in the St. Louis Area

Tech Electronics security systems are trusted by schools, hospitals, public safety departments, transportation hubs, and nonprofit organizations across St. Louis.

Below are recent examples of our work in the region.

We work closely with K-12 schools, higher education institutions, corporate offices, healthcare providers, and cultural destinations to deliver security systems that are as reliable as they are flexible.

Whether you’re replacing an aging alarm panel or designing layered protection for a new facility, our track record across St. Louis speaks for itself.

Comprehensive Intrusion Detection Support in St. Louis

A strong intrusion detection system is more than sensors and sirens. It requires constant monitoring, proactive maintenance, and expert support to deliver seamless protection.

At Tech Electronics, we provide full lifecycle support, from design and installation to long-term maintenance and 24/7 emergency response.

Our local service team is committed to keeping your panels, sensors, keypads, and communicators running at peak performance.

Fire and Security Monitoring

Integrated 24/7 monitoring ensures intrusion alarms are received, verified, and acted on around the clock, alongside your fire and life safety systems.

Service and Maintenance Plans

Proactive service agreements help prevent system downtime, extend equipment life, and keep every zone reporting the way it should.

Inspections and Testing

Scheduled system tests verify sensor function, confirm signal transmission to the monitoring center, and document system health, which is critical for insurers and regulated industries.

System Health Checks

A structured assessment of your existing security system that identifies risks, aging equipment, and coverage gaps, and prioritizes what to address first.

Technology as a Service (TaaS)

Bundle your intrusion detection hardware, monitoring, support, and upgrades into one predictable monthly payment, reducing upfront costs and simplifying management.

24/7 Emergency Support

Our on-call technicians are available around the clock to address urgent service issues and minimize gaps in protection.

We’re more than an alarm installer. We’re your long-term partner in building a safer, smarter business.

ESA Certified Intrusion Detection Experts

When it comes to protecting your facility, experience and certification matter. Tech Electronics is proud to be an ESA Certified Security Systems Integrator (CSSI), a designation awarded to firms that meet the highest standards in design, installation, and ongoing service of electronic security systems.

NICET-Certified Technicians

Our installation and service teams hold certifications from the National Institute for Certification in Engineering Technologies (NICET), ensuring your system is installed and maintained according to nationally recognized best practices.

63+ Years of Experience

Since 1963, we’ve been designing and implementing security technology for St. Louis organizations of all sizes and industries. Our legacy speaks to our reliability, depth of knowledge, and community trust.

Continuous Training and Certification

Security technology keeps evolving, and so do the tactics used to defeat it. We invest in ongoing education and manufacturer training so your system reflects current best practices, not last decade’s.

Whether your project requires a single keypad system or layered protection across multiple sites, you can trust that our team is equipped with the expertise and credentials to deliver results that last.

Intrusion Detection System Investment in St. Louis

Intrusion detection systems can be tailored to meet the needs of small businesses, large enterprises, and everything in between.

At Tech Electronics, we provide transparent pricing, flexible solutions, and scalable options to help you plan your investment with confidence.

Basic monitored commercial security systems typically start around $50 per month, while advanced systems with expanded coverage and integrations can run $100 per month or more. We’ll help you scope a system that fits both your risk profile and your budget.

Number of protected entry points (doors, windows, gates, docks)

Interior coverage area and motion detection zones

Monitored versus unmonitored design and level of alarm monitoring service

Panel, keypad, and communicator hardware

Integration with access control, video surveillance, and existing infrastructure

Intrusion Detection Systems FAQ, St. Louis

How do most burglars break into commercial properties?

Burglars typically target vulnerable entry points such as doors, windows, and loading docks, forcing locks, breaking glass, or exploiting weaknesses in the building’s structure. Perimeter entry detection and glass-break detection systems identify these attempts the moment they happen, and reinforcing entry points with contact-based intrusion detection devices helps prevent unauthorized access and minimize damage during attempted break-ins.

What's the best way to prevent break-ins at a commercial property?

The most effective approach is layered: perimeter contact sensors, glass-break detection, and interior motion detection, combined with visible deterrents like cameras and proper exterior lighting. Pairing that layered design with 24/7 commercial alarm monitoring ensures that when an alarm triggers, someone is always there to respond, whether that means notifying your keyholders or dispatching authorities.

When are commercial properties most at risk for burglaries?

Most commercial break-ins happen after business hours, particularly late at night and in the early morning when buildings are empty. Properties with poor lighting or unprotected ground-floor entry points are especially vulnerable. Monitored intrusion detection keeps your facility covered during exactly the hours your team is not there.

Are do-it-yourself security systems effective for commercial properties?

DIY systems can provide basic protection, but they generally lack the coverage design, reliability, and response infrastructure that commercial facilities need. A professionally designed system is engineered around your specific entry points and interior zones, installed by certified technicians, and backed by 24/7 monitoring with a defined response plan. For a business, the difference shows up in the moments that matter most.

What do contact sensors and glass-break detectors actually do?

Contact sensors secure openings like doors, windows, and gates by triggering an alarm when a protected point is opened or tampered with. Glass-break detectors listen for the distinct sound and vibration of shattering glass, covering entry attempts that bypass the door entirely. Together they form the perimeter layer of a commercial intrusion detection system, providing early warning before an intruder is inside.

How much does a monitored commercial security system cost?

Costs vary with the size of your property and the level of protection required. Basic monitored systems typically start around $50 per month, while advanced systems with expanded device coverage and integrations can run upwards of $100 per month. We provide transparent, itemized proposals so you know exactly what you’re investing in.

Can you integrate intrusion detection with my existing cameras and access control?

Yes. We specialize in integrated security systems that unify intrusion detection with video surveillance, access control, and fire alarm platforms. When a zone triggers, the relevant camera feed can be pulled up automatically and the event logged alongside access activity, giving your team the full picture in seconds.

Do you service intrusion detection systems throughout the St. Louis metro area?

Yes. Our local team services facilities in St. Louis City, St. Louis County, and surrounding areas including Chesterfield, Kirkwood, Clayton, and neighboring counties. We also support regional clients across Missouri and Illinois.

Schedule Your Intrusion Detection Consultation in St. Louis Today

Securing your facility starts with the right partner. Tech Electronics makes it easy to take the next step with a personalized consultation, site survey, and expert system design tailored to your building and industry.

Schedule a consultation to equip your St. Louis facility with modern intrusion detection.
Request a site survey to evaluate your entry points, interior zones, and existing infrastructure.
Book a system health check to assess your current security system and identify coverage gaps before they become losses.

Whether you’re starting from scratch or replacing an aging alarm system, our team is here to help you make informed, confident decisions, backed by 63+ years of trusted service in St. Louis.

Get started today by calling (314) 645-6200 or visiting us at 6437 Manchester Ave, St. Louis, MO 63139.

Resource Center

Access Control

Still Have Intrusion Detection Questions?

Share a few details below and a Tech Electronics expert will follow up to explore the right intrusion detection solution for your facility.