Intrusion & alarm protection

Alarm systems designed around every perimeter, opening, and interior zone.

An intrusion alarm system uses detectors, a control panel, communications, and configured notifications to identify unauthorized activity. Three Factor Security designs and installs alarm systems around the property’s occupied and unoccupied conditions, existing infrastructure, verification options, and agreed monitoring requirements.

Designed around the property

Complete scope. Clear handoff. Long-term support.

From a focused residential alarm to a multi-zone commercial deployment, we map the property first and select the right mix of door, window, motion, glass-break, panic, siren, and environmental devices. Zones, schedules, users, backup communications, and response procedures are configured around the way the property operates.

Two Three Factor Security technicians installing alarm contacts on residential windows — Three Factor Security fieldwork in Redondo BeachFieldwork inRedondo Beach

Alarm protection at the opening

Window and door detection installed around real entry points.

Our technicians fit alarm contacts to the property, connect them to the wider system, program the intended behavior, and test every protected opening before handoff.

Window and door contactsPanel programming and testingClear customer operation

Capabilities

Everything the system needs to work as one.

01

Door, window, motion, and glass-break detection

02

Indoor and outdoor motion verification

03

Keypads, sirens, panic, and duress devices

04

Cellular communication and battery-backup options

05

App control, user permissions, schedules, opening-and-closing reports, and activity history

06

Live-monitoring and real-time response connections when selected

What to expect

A structured path from assessment to handoff.

01

Map the property

Document doors, windows, rooms, outdoor approaches, and the way occupants use the space.

02

Design protection layers

Choose perimeter, interior, verification, communication, and backup devices for each risk.

03

Install & configure

Mount devices, establish communications, organize zones and users, and test every trigger.

04

Train & activate

Set up app access, review arming and opening-or-closing exception workflows, confirm contacts, and connect selected monitoring services.

Related specialties

Intrusion alarmsPerimeter protectionInterior detectionCellular backupPanic & duressApp-based controlOutdoor motion verificationAlarm takeover & upgrades

Alarm operations & outage resilience

Know who opened, what needs attention, and what continues during an outage.

Alarm reliability depends on more than the sensors. We document opening and closing expectations, exception ownership, communication paths, backup power, notification sequence, local behavior, and customer responsibilities so routine operations and outages are both easier to manage.

01

Primary communication

Confirm whether the panel uses internet, cellular, another supported path, or a coordinated combination for monitoring and remote access.

02

Backup communication

Review available cellular or alternate-path supervision so one service interruption does not silently remove the intended monitoring connection.

03

Power & battery support

Size and test panel batteries or supported backup power around the installed devices, communication equipment, expected runtime, and maintenance plan.

04

Local alarm behavior

Document what sirens, keypads, sensors, and on-site controls continue to do when internet access or off-site services are unavailable.

05

Notification & response path

Confirm authorized contacts, call order, verification rules, app notifications, monitoring instructions, and supported escalation steps.

06

Permits & responsibilities

Identify alarm-permit, contact-list, access, testing, battery, and account responsibilities that remain with the property owner or authorized manager.

07

Opening & closing review

Use supported arming, disarming, early-open, late-close, and failure-to-arm history to identify operating exceptions without treating every event as an emergency.

08

Exception ownership

Define which manager reviews recurring schedule exceptions, missing users, shared codes, unusual activity, and contact changes—and how corrections are documented.

Available reports, communication paths, supervision, backup operation, monitoring actions, and runtime vary by the selected platform, carrier coverage, installed equipment, permissions, written agreement, and site conditions.

Service-specific planning tools

Prepare the next decision with a practical resource.

Common questions

Clear answers before the project begins.

Guidance is prepared and reviewed by Three Factor Security’s named Security Solutions Manager and Security Solutions Engineers. Final recommendations are based on a professional assessment, the existing infrastructure, the property’s operating needs, and the systems selected.

What is the difference between a monitored and unmonitored alarm system?

An unmonitored system may sound a local siren or send a direct app notification, leaving the response to the property owner or staff. A monitored system sends supported alarm events to a monitoring center that follows the approved verification and notification plan and, when appropriate, requests emergency response.

How can false alarms be reduced?

False alarms are commonly caused by user mistakes, unsecured openings, unsuitable sensor placement, pets, or devices that are not calibrated for the environment. We address those causes with practical user workflows, appropriate sensor selection, zone planning, testing, and verification options such as linked video where supported.

Does my city require an alarm permit or charge false-alarm fees?

Many Southern California jurisdictions require an alarm permit or registration and may charge escalating fees for repeated false dispatches. Rules differ by address and may change. Permit responsibility and the applicable local requirements should be confirmed with the city or responding agency as part of project planning.

What happens to the alarm system during a power outage?

Alarm panels and selected communications equipment can be backed by batteries or a UPS. Actual runtime depends on the panel, connected devices, battery capacity and condition, communication method, and any applicable code or monitoring requirements. Backup duration is calculated for the installed system rather than assumed from a universal number.

Can an alarm system integrate with cameras and access control?

Yes, when the selected platforms support the required integration. An alarm event can be paired with relevant video, door status, notifications, or a defined access-control action so staff and monitoring personnel have better context. Every automated action is reviewed for safety, permissions, and the intended response workflow.

What if someone cuts the phone or internet line?

Modern monitored alarm systems can use cellular communication as a primary or backup path. We review the available carriers, signal strength, supervision, backup power, and communication sequence so a single connection failure does not silently remove the intended monitoring path.

Is professional alarm monitoring worth it for a small business?

For many businesses with inventory, cash, controlled areas, or periods without staff on-site, professional monitoring adds a defined response path when no one is available to evaluate an alert. The value depends on the property and risk profile. Some insurers may consider monitored protection, but coverage and any discount should be confirmed directly with the carrier.

Can I arm, disarm, manage users, and review events remotely?

Yes, on systems that include supported remote management. Authorized administrators can typically arm or disarm, manage codes or users, receive notifications, and review event history from an app or web interface. Permissions are configured so each person receives only the access needed for their role.

Southern California service areas

Alarm Systems in Los Angeles →Alarm Systems in Beverly Hills →Alarm Systems in Santa Monica →Alarm Systems in Irvine →Alarm Systems in Newport Beach →Alarm Systems in Ventura →View every service area →

Complete security offering

Coordinate this service with every layer of protection.

Explore the other systems and services Three Factor Security can design, install, monitor, and support around the same property.

Video security & intelligence

Security Camera Systems

Professionally designed camera systems for dependable coverage, useful evidence, intelligent alerts, and secure viewing from anywhere.

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Live oversight & remote visibility

Live Monitoring & Remote Site Surveillance

Construction site monitoring and trained operator oversight for staffed, unattended, distributed, temporary, and high-risk properties that need dependable remote visibility.

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Live remote guarding, intervention & response

Virtual Security Guard & Incident Response

Commercial and residential virtual security guard service with live remote patrols, event verification, authorized audio talk-down, and coordinated response while incidents are developing.

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Visitor communication & entry

Intercom Systems

Audio and video intercom systems that help teams identify visitors, communicate clearly, and release doors or gates with confidence.

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Credentials, doors & gates

Access Control Systems

Secure, manageable access control for doors, gates, garages, elevators, and shared spaces—installed around daily operations.

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Intelligent early warning

Early Detection Systems

AI analytics, perimeter technology, thermal sensing, and intelligent alerts designed to identify developing threats before they become damaging incidents.

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Gates, fencing & controlled access

Gates, Fencing & Perimeter Security

Professionally designed pedestrian gates, vehicle gates, perimeter gates, and fencing—with gate operators, LPR-based vehicle entry, access control, and intercom release integrated around the property.

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PA, talk-down & emergency messaging

Security Audio & Emergency Communication Systems

Purpose-built speakers, paging, talk-down, duress, and security communication systems that help teams warn, direct, deter, and respond in real time.

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System takeovers, retrofits & modernization

Security System Upgrades & Modernization

Carefully planned upgrades for aging, unreliable, unsupported, or poorly documented camera, alarm, access-control, intercom, recording, and monitoring systems.

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Strategy, planning & documentation

Consulting & System Design

Property-specific consulting, system audits, design documentation, budgeting, and phased security roadmaps built around real operating needs.

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Inspection, testing & lifecycle support

Preventive Maintenance & System Health

Scheduled inspections, system-health reviews, cleaning, testing, updates, and documented recommendations for dependable long-term performance.

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Project support

Clear terms. Dependable follow-through.

Coverage, service terms, and handoff requirements are documented for each project. Preventive maintenance, diagnostics, upgrades, and expansion options remain available as the property evolves.

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Resiliency planning

Plan what the system should do when normal conditions are interrupted.

Backup power, alternate communication, local recording, health alerts, and documented recovery steps are selected around the property and service agreement—not assumed.

Power

UPS capacity, safe shutdown, and expected runtime

Communication

Internet, cellular, and supported alternate paths

Recording

Local, edge, or cloud behavior during an outage

Awareness

Health notifications, ownership, and escalation

Recovery

Verification after service is restored

Begin with a professional assessment

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