This year I've been all about trying new services instead of sticking with old mediocre ones. After…read moreseeing these reviews, I decided to give these guys a try, and they didn't disappoint. I reached out and Don came by the next morning, and gave me a quick and simple quote that blew the other guys out of the water. He was quick and professional, and fully delivered with terrific quality cameras. We have had two small issues since then (not to do with the quality of work, just minor snafus) and Don responded to me right away and helped me fix the problem. These guys will be my first call the next time I need anything like this.

Chicago Security Surveillance: Don was fantastic! Professional, informative, efficient are words to…read moredescribe his company. He told us exactly what gear we required for our little home. GREAT JOB, DON! 5 STARS!!!!! THANKS AGAIN!

Fantastic old school service. Hard to find honest and fair with excellent service but this place is…read moreit.

I recently had All Guard Audio and Electronics install LED foot wells in my new 2026 Toyota Sequoia…read moreTRD Off Road and I couldn't be happier with the results. Adam and Bob were professional, knowledgeable, and efficient. The LED foot wells look fantastic in my vehicle and really adds a cool, modern touch to the interior. The added lighting also makes it easier to see inside the vehicle at night and adds a nice ambiance to the interior. Thank you All Guard Audio for a job well done! Ed Scott.

I have used Alert since 2006 and they have been much more reliable than ADT and AT&T which I…read morepreviously used in different homes. Quick response, rare false alarms, reasonable pricing. This review is also about their tech support which we had to call for a lot in the past year: first to upgrade our system as we put it in 18 years ago; and then because we remodeled our basement so they had to come out a few times to deal with construction dust setting things off, moving motion detectors when walls were moved, adding new window contacts etc. Two of their service techs specifically are amazing: Gus and Mara. I feel extremely lucky when they send either of them out. Especially Mara. She stands out as being the most competent service tech - of *any company* I have ever dealt with. She assesses the situation, makes recommendations for better solutions, advocates for the customer if needed, and then executes the solution flawlessly, efficiently, quickly. Again shout out to Gus who is A+ but I have to give Mara an A++!

30 year of coustore Of Alert alarm . I don't know why i still a customer they charge me for…read moreservice couple months of service and I never set the system up and running yet. I explained the system was not installed yet ! Originally the service guy ( Joe ) stated no problem i will not start billing until they set up lies more lie . the DIY system are junk ( crap )but so far they back up the shitty product . They want money and they Absolute horrible customer service .

Went to get a lock set rekeyed. Dominic was very prompt and turnaround was quick at good value.read more

Quick Key was hired and very easy to work with. We were provided with an estimate relatively…read morequickly and we scheduled an appointment soon after. The tech arrived on time and installed the lock professionally. They also recommended a better lock that we purchased. Payment was easy to make. Cost was reasonable.

If AnyOne, Would Like To Work For A Security Firm, Guardian Would Be The One, Ive Had Such A Great…read moreExperience Meeting Some Of The Staff, Rick & Marge...Very Professional!!!...I Also Talked With The GM Dominick, I'm Soo Happy To Be Working For Guardian Security.....Ty Dominick For The Great Phone Convo!!!...Please Tell Rick & Marge, Ty

Hire this security company if you want to jeopardize your safety while overpaying for it. The board…read moreat my high rise residence hired them a few years ago and since then we've had a shooting and home invasion because the guards refuse to cover the front desk. Anyone can come in as they please. They do not check in packages properly, fight with residents who have medicine or other time-sensitive supplies delivered daily and disappear for hours at a time. Several residents called the supervisor David Wood but he refused to take any action. Having no security service is much better than hiring Guardian--at least you don't waste money.

We recently moved to a new home and once again called On Guard to install our new security system…read more Tom and Jim were wonderful. Repeat business is the best indicator of a great company. On Guard should be your go to choice when adding a security system to your home.

Really surprised I am there first review. We have been using them for 5 years now for our historic…read morebungalow on the northwest side of Chicago. They were and have been thoroughly professional from the original installation to the replacement of a window sensor to adding new sensors when we had new windows installed. They have always been professional and on time. Can't recommend them enough, in fact I was just referring them them to a client I sold a house to, as I am a real estate agent. I refer their services a dozen times a year.