About Us

Sentinel has been the gold standard for over 45 years

Since 1978, Sentinel has provided customized security solutions for clients in Montreal and the surrounding area, with a reach throughout Canada and in the United States through our Vermont division. Our fully bilingual expert staff has over 200 years of combined experience in the security industry. Throughout its history, Sentinel has maintained its commitment to providing outstanding quality, service, and reliability, and we continue to do so to this day.

Our team is standing by to provide you the exact security solution that meets your needs. You can trust that you will receive professional installations from our certified technicians and 24/7 monitoring through our U.L.C listed and Five Diamond Certified Monitoring Centre.

Client Reviews

"Richard was very patient and professional with servicing our building and so was Nick at the central station. We greatly appreciate Alarme Sentinelle".

— Daniel, Z

"There isn't much to be said. Your company hires the best, most experienced people, who appreciate working for a company made up of real people. There is a difference between a company that wants numbers and a company that wants to be all around good to the customer and the staff. Congrats on being such a great company".

— John, M

"Sylvain is the best installer and he knows how to resolve issues quickly because he really knows his stuff. I cannot say enough good things about Sylvain".

— Phil, C

"Thank you so much for the quick action. As usual your customer service and response time are great".

— Harry, S

“Our sincerest compliments to your staff and security systems for the excellent way they operated during a recent break-in”.

— Brandon, T

"The technician who came was great, not only was he punctual, he also took the time to answer all of my questions and ensured the installation areas were as neat and tidy as when he arrived. There was no attempt to oversell services, you listened to what we wanted, gave us your professional opinion and installed a system tailored to our needs. Sentinel has served me well for over 20 years and I would gladly recommend Sentinel Alarm to any respective client".

— Glenn, D

“Thank you for the excellent residential service I’ve received for more than 30 years.”

— Julien, A (translated from French)

“I am really glad I picked Sentinelle 15 years ago. Communication is always good; both personable and respectful. I feel listened to and I get all the information I need for my alarm system (emailed manuals, help to replace batteries myself). The technicians give clear advice and never try to sell me new products unless it is actually necessary to replace the equipment. The accounts department is also excellent. I think Sentinelle is a company with old fashioned values. You have to trust your alarm company, and everything you do makes that possible.”

— Elizabeth C.

Why Us?

Our Monitoring Centre is equipped with the latest technology to monitor all types of alarm system signals through Landline, Cellular and Internet.
We offer a large range of hardwired, wireless and hybrid security systems.
We can monitor your security system through Cellular or Internet with a simple low cost adjustment to your existing system.
Monitoring your security system through Cellular ensures your security system is tamper proof and that you will not experience interruption in your service. While gaining the benefit of total interactive control of your security system wherever you are.
Our Monitoring Centre is equipped with the most advanced and specialized remote monitoring technology to monitor for all types of alarm systems and ensure 24 hour protection for any home or business. Our Centre is also approved by the Underwriters Laboratories of Canada (ULC) and is a certified Five Diamond™ Monitoring Centre which places strict standards such as random inspections, ensuring the highest levels of customer service, on-going job related education and investment and a commitment to reducing False Alarm dispatches.
As a ULC listed and certified Five Diamond™ Monitoring Centre, we invest heavily in our operators under our proven internal Sentinel Excellence program. To ensure the highest levels of security, quality, service, and reliability for all our customers and partners, operators participate in the Monitoring Association’s Five Diamond operator course.
Our Monitoring Centre is staffed with our dedicated Team of highly certified operators, working 24 hours a day to deliver a truly premium level of customer service and fast emergency response times.
Whether you have an existing security system or are looking to buy a smart security system from Sentinel, connecting to our professional Monitoring Centre qualifies you for a substantial discount on your home insurance premium sometimes up to 30%.
Our experts will convert your existing hard-wired or wireless system and optimize any components if needed to meet insurance standards, with the option of adding protection against water damage protection, allowing you to benefit from the very best and latest home security technology on the market.