Alarm systems in Cornwall
Intrusion systems with keypads, door and motion sensors and phone control, installed for Cornwall homes, shops and offices.
Cornwall, Ontario
Security systems in Cornwall, ON
ASL is headquartered in Cornwall — our office, our trucks and our technicians are here. We install and service alarms, cameras, fire systems and networks for Cornwall homes and businesses, with 24/7 Canadian monitoring and a 60-minute critical technician dispatch target, not an arrival guarantee.
60 min
Critical dispatch target
24/7
Live monitoring, real operators
0 km
Distance from our Cornwall office
1 team
Alarm, camera, fire & cabling
Why choose a Cornwall-based security team
Based in Cornwall
Not a satellite branch or a lead-gen listing — a real Cornwall office with local technicians.
Critical dispatch target
Our target is to dispatch a technician within 60 minutes for critical calls in the Cornwall area. Dispatch means assigning and sending a technician, not arrival at your property; availability, travel and site conditions affect arrival time.
One accountable team
We install the camera, wire the rack and monitor the fire panel — no subcontractor finger-pointing.
Cornwall services
What we install & monitor in Cornwall
Security cameras in Cornwall
HD and 4K camera systems with night vision and remote viewing — from a single doorway to a full Business Park site.
Fire alarm & inspection
Code-compliant fire detection, annual inspection and monitored fire panels for Cornwall commercial buildings.
Networking & cabling
Structured cabling, server racks and Wi-Fi coverage — wired by the same team that hangs the cameras.
Cornwall homeowners
Riverdale bungalow or a new build off Brookdale — we design around your doors, windows and habits, install it cleanly and show you how it works before we leave.
Cornwall businesses
Access control, multi-camera coverage, monitored fire panels and structured cabling for Pitt Street storefronts, Business Park warehouses and industrial sites.
Cornwall coverage
Every corner of the city
From Riverdale to the Business Park, our technicians are minutes away — not staged out of a depot in Ottawa or Belleville. Contact us to confirm technician availability.
See the full SD&G mapDowntown / Le VillageRiverdaleLe Village EastCornwall CentreSunrise / Riverview HeightsGuindon Park areaBusiness Park & Industrial ParkBrookdale corridorPitt Street corridorVincent Massey / East EndGlen Walter & Long Sault edgeAkwesasne
Is ASL actually based in Cornwall?
Yes. Our office, our trucks and our technicians are in Cornwall, Ontario. Many companies advertising here dispatch from Ottawa, Belleville or the GTA — two hours or more down the 401.
How fast can ASL dispatch a technician in Cornwall?
Our target is to dispatch a technician within 60 minutes for critical calls in the Cornwall area. Dispatch means assigning and sending a technician, not arrival at your property; availability, travel and site conditions affect arrival time.
Do you monitor alarms 24/7?
Yes. Every ASL system can be connected to 24/7 live monitoring where a real operator answers — intrusion, fire, environmental and medical signals included.
Do you handle both homes and businesses in Cornwall?
Both. We install residential alarms, cameras and smart locks, plus commercial access control, multi-site camera systems, fire alarm inspection and structured cabling.
Do you service fire alarm inspections in Cornwall?
We install, inspect and monitor code-compliant fire alarm systems for Cornwall commercial and residential buildings, and we keep the paperwork you need on file.
What areas around Cornwall do you cover?
All of Stormont, Dundas & Glengarry — Long Sault, Ingleside, Morrisburg, Alexandria, Maxville, Winchester, Chesterville, Lancaster, Williamstown, Finch and Apple Hill — plus install, service and monitoring anywhere in Ontario.
Let's secure
your property
Free, no-pressure consultation for homes and businesses in Cornwall, SD&G and across Ontario. Tell us about your property and we'll design a system that fits it.