PROTECTION THAT NEVER SLEEPS

Smart Home Alarm Systems in Niagara

Installation • Upgrades • 24/7 Monitoring

Protect your family with a proactive system. Whether you need a brand new Ajax installation, an upgrade for your old DSC panel or reliable ULC monitoring, we are Niagara's trusted experts.

Serving homeowners from Grimsby to Fort Erie since 1985.

Design My System

Or Call Local: 905-688-3223

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In-House Technicians

Our team is 100% in-house and non-commissioned. You get honest security advice tailored to your home and never a high-pressure sales pitch.

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24/7 ULC Monitoring

We watch over your home 24/7. In a fire or burglary emergency, our certified station dispatches Niagara police and fire services instantly.

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40+ Years of Expertise

Security is a craft, not a commodity. Since 1985, we have logged thousands of hours securing Niagara homes. We know exactly where to place sensors for maximum protection without unnecessary costs.

MODERN & RESPONSIVE

More Than Just a Noisemaker

Old alarm systems just made noise and hoped a neighbour would hear. Our modern Ajax & DSC Neo systems take action. They communicate instantly with our monitoring station via Wi-Fi and LTE, ensuring help is summoned even if the power is cut or phone lines are down.

The Smart Hub

We install the latest processors, including the Ajax Hub 2 and IQ Hub 4. These encrypted "brains" use dual-path technology (Wi-Fi + LTE) to ensure your alarm signals get through—even if the power is cut or the internet goes down.

Visual Verification

Eliminate false alarms with Ajax MotionCam technology. When a sensor trips, you (and our station) receive a series of photos instantly to confirm if it's a real threat or just a family member who forgot the code.

Smart Automation Options

We match the hardware to your needs. Choose Ajax for simple, reliable security scenarios, or choose Alarm.com for a fully connected smart home experience with locks, lights, thermostats, and integrated cameras.

technician installing security motion detector

THE ALLIANCE DIFFERENCE

Long-Term Support, Not Temp Labor

In a world of high-turnover service companies, Alliance Security stands apart. Our technicians aren't just employees; they are long-term members of our team who understand the "how and why" behind your home’s protection.

Continuity You Can Trust: When you need an upgrade or a service visit, you get an expert who is already familiar with your property. Because our in-house team stays with us for years, your technician often knows your system's history and your home's unique layout before they even walk through the door.

FLEXIBLE INSTALLATION OPTIONS

Upgrade Your Current Alarm or Start Fresh

Already Have A Security System?

Don't replace equipment that isn't broken. We specialize in taking over existing DSC panels. Have a different brand (like Honeywell)? We can often reuse your existing wired sensors while upgrading just the keypad and panel—giving you a modern smart system without the cost of a full rewire.

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Save Money: Reusing your hardwired sensors can save you hundreds on equipment costs.

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Modern App Access: We replace your "landline-only" panel with an LTE-connected hub for instant phone alerts.

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Full System Audit: We don't just "plug it in." We test every old sensor for battery life and signal strength to ensure your legacy equipment is actually reliable.

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New Wireless Installation

Perfect for new builds, renovations, or homes without pre-existing wiring. We use professional-grade, encrypted wireless technology that provides massive range and years of battery life without any drilling or messy construction.

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Pro-Grade Reliability: We use encrypted PowerG and Jeweller tech that is more reliable than standard Wi-Fi sensors.

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Fast & Clean: A full home system can often be installed and tested in just a few hours with zero mess.

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Easily Scalable: Our wireless systems are modular. You can easily add more sensors, smoke detectors, or smart plugs later as your family’s needs grow.

Start Your Design

SMART HOME AUTOMATION

Your Home in the Palm of Your Hand

The days of racing to the keypad before the beeping stops are over. Whether you choose the lightning-fast Ajax app or the feature-rich Alarm.com dashboard, you can arm your system, check sensor history, and receive instant alerts from anywhere in the world.

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Visual Checks

See what triggered the alarm with instant photo or video alerts right on your phone.

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Remote Access

Unlock the front door for a neighbor or let the kids in after school without sharing your master code.

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Smart Automation

Create "Scenes" that automatically adjust your lights and thermostat the moment you arm your system.

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Instant Alerts

Receive push notifications for more than just alarms—know if there’s a power failure or a low battery.

SMART FRONT DOOR

Never Miss a Visitor

The front door is the first line of defense for your home. We offer professional video doorbells that integrate directly into your Ajax or Alarm.com app, allowing you to see, hear, and speak to whoever is at your door—whether you are in the kitchen or out of town.

Pro-Grade Performance: Unlike retail doorbells that lag or fail in Niagara’s winters, our doorbells are designed for reliability. Enjoy crystal-clear HD video, superior night vision, and instant alerts the moment someone approaches.

Verified Security: Confirm deliveries or screen visitors before opening the door.
Smart Integration: Lock or unlock your smart door lock directly from the video screen.
No More Guesswork: High-quality motion sensors distinguish between a person and a passing car.

TRANSPARENT ADVICE

We Match the Technology to Your Lifestyle

Not every house needs a complex automation system, and not every homeowner wants to learn a new app. We use our 40 years of experience to help you choose the platform that fits your family's routine and your budget.

Our Promise: We will never sell you a complicated enterprise system if you just want simple, reliable peace of mind.

📹 A Note on Home Cameras

Unified vs. Separate: We can combine your alarm and cameras into a single app (via Ajax or Alarm.com) for total convenience, OR keep them separate (using WatchNET) to give you professional 5MP Colour Night Vision, a 5-Year Warranty, and Zero Monthly Video Fees. The choice is yours.

Compare our Residential Video Solutions

We Help You Decide:

🛡️ Reliable Retrofit & Takeovers

Best for: Homeowners with existing wired systems who love simplicity.

✅ Platform: DSC PowerSeries NEO with LTE Communicator.
✅ The Benefit: Don't fix what isn't broken. We update your panel and keypad but reuse your existing sensors to keep installation costs low. Perfect if you want a familiar, traditional system without learning new technology.
⚠️ The Trade-off: Basic app features (arm/disarm only). Limited smart home automation.

⚡ Smart & Responsive (Most Popular)

Best for: Modern families, renters, and visual verification.

✅ Platform: Ajax Wireless.
✅ The Benefit: Powerful App & Dual-Path Speed. Experience the fastest app on the market, backed by dual Wi-Fi + LTE monitoring. Includes seamless Video Doorbell integration and smart automation for plugs and lights.
⭐ Why Owners Choose This: It offers the perfect balance of advanced security speed and smart convenience without the complexity of a full enterprise system.

🏠 Complete Smart Home Control

Best for: Tech enthusiasts and busy families who want "One App for Everything."

✅ Platform: Alarm.com & IQ Hub 4.
✅ The Benefit: Total Integration. This is the gold standard for smart homes. Control your security, smart locks, garage doors, and thermostats from a single dashboard. Create custom "Scenes" for your daily routine.
⚠️ The Trade-off: Slightly higher monthly subscription to support the advanced cloud automation features.

LOCAL REVIEWS

Trusted by Niagara Families

See why your neighbours in St. Catharines and beyond rely on Alliance for their safety and peace of mind.

      EXCELLENT  
   Based on 68 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Lisa 
 
 
 
 Trustindex verifies that the original source of the review is Google. From the very beginning my experience with Alliance has been exceptional.  They scheduled my appointment quickly. Kent (sales) was informative, and gave me a great price.  My installation was done when I wanted without any problems.  Mitch (the technician) was also informative, knowledgeable and thorough.  Also, the entire staff is friendly and highly accessible.  I would recommend Alliance Security Niagara without hesitation. Lisa
  
 
      Posted on Google  
   
   Roberto 
 
 
 
 Trustindex verifies that the original source of the review is Google. The owners and staff are always courteous and very focused on quality customer service. I recently interacted with the owner of the company and one of the IT technicians. Both of them were excellent, as usual, in helping to resolve/answer the questions we had and assist us with upgrades to our alarm equipment. Thank you, Alliance Security Niagara!
  
 
      Posted on Google  
   
   Jill Husak 
 
 
 
 Trustindex verifies that the original source of the review is Google. These guys are the best ! We love our new system! Can’t thank them enough for all the help ! We have recommended them to all our friends, colleagues and neighbours!
  
 
      Posted on Google  
   
   Liz Fortushniok 
 
 
 
 Trustindex verifies that the original source of the review is Google. Dealing with Alliance today to set up our home security was a real pleasure.   Their technician.Andrew, was professional and very informative.   Would highly recommend
  
 
      Posted on Google  
   
   Michael Deluca 
 
 
 
 Trustindex verifies that the original source of the review is Google. Alliance Security is a 5-star company.  Kent and his team worked around our tight schedule and helped us get secured.  Highly recommend!
  
 
      Posted on Google  
   
   Melissa Biancaniello 
 
 
 
 Trustindex verifies that the original source of the review is Google. 12/10 Service! Knowledgeable, friendly and supportive!
  
 
      Posted on Google  
   
   Pauline 
 
 
 
 Trustindex verifies that the original source of the review is Google. Mitch who installed my system was amazing. He patiently explained how to operate my new system (my old one was 30 years old!) and made modifications based on my individual needs. I am a senior and not that tech savvy, so having Mitch patiently walk me through the Alliance app was greatly appreciated. Other security service providers prior to this did not offered this level of attention to detail. I look forward to using my new system. Thanks Mitch and Alliance!
  
 
      Posted on Google  
   
   gail martin 
 
 
 
 Trustindex verifies that the original source of the review is Google. Alliance is extremely professional and always there to help. Andrew saw the problem and was very efficiently rectified it. Would highly recommend them.
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

LOCAL NIAGARA FLEET

Real People, Right Around the Corner

We aren't a remote call centre. We are based right here at 46 Niagara Street in St. Catharines. When you call Alliance, you are speaking to local experts who live in your community and know your neighbourhood’s specific security needs.

Serving: St. Catharines • Niagara Falls • Welland • Thorold • Lincoln • Beamsville • Grimsby • Fort Erie • Port Colborne • Niagara-on-the-Lake

Own a business? We also provide Commercial Security & CCTV Solutions for Niagara facilities.

Alliance Security Office and Van Fleet on Niagara Street St. Catharines

Experience the Alliance Security difference.

Call 1-877-427-7263 or