I've had D&I Electronics protecting my home for 30yrs. They have everything you would need to…read moreprotect your home. And they won't try to sell you what you don't need. They've been in the security business since the 60's, that's saying something.

These guys are doing the security system in my home and so far have been very pleasant to work…read morewith. They're professional, responsive, and seem to have a great work ethic as far as reliability. They also work very well with the other subs and the GC on the job, and go above and beyond to accommodate and make things happen quickly.

Pro Video Security backs up their work. And they're easy to work with -- and honor their word. I'd…read moreeasily work with the team of Perry, Max, and their subcontractors again. Last summer, we had a break-in at our condo entrance, and found a need for a Full Length Interlocking Door Guard. (Highly recommended as burglars love to shimmy a screwdriver between your door and lock & open into your place easier than a SPAM can.) Pro Video Security let us select the guard. They gave a great bid to put install. We even chose to do 2 doors, given their great rate. Flash forward to 6 months later we found a small (but significant) installation error on one of the doors. Rather than haggle and hassle, they came right out and fixed it at ZERO extra cost. (As expected.) On top of that: The fix came right on time. We caught this picture of a rather infamous trio (USPS is after them) trying to break in and being foiled by the door guard. SEE PIC.

I started out with Provideo Security around 10 years ago when I was looking to install cameras in…read moremy yard, following an incident where two of my dogs got bitten by a rattlesnake. I wanted to be able to keep a watch on the dogs and also of course on my house in general. I bought the equipment from Provideo and I am all the way in California, so I had a local person install the equipment for me, and Perry took over the remote customer service, which has been far above and beyond what anybody could ever expect from customer service. If anything goes wrong, he is right there ready to help me fix it and get it up and running again. I could probably find someone locally, but there is no way I would ever find such great, friendly, knowledgeable customer service. So wherever you are in the world, these guys are the best! Thank you, Perry!

My friend in Joliet locked herself out of her house and her cellphone was inside. She was wearing…read moreher watch that connects to her phone and was barely able to contact me and explain the situation. I reviewed Oestreich on Yelp and called. The gentleman who answered was a little gruff but not terrible. The tech he sent out was very polite, helpful and efficient.

Called on the phone and asked if they could make a key for me, they said yeah sure no problem! When…read moreI arrived at the store I was told they said they couldn't make the key at all, unbelievable!

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!

We switched to Xfinity because they were offering deals which included a new phone when adding a…read moreline. I have been in the store six times and they were not able to deliver on anything. They transferred our numbers but couldn't activate my watch for a month. They still charged me. They also added things to my internet that I did not want. Cameras and streaming services that I don't need. They said it would not raise my payment, it did. The part that bothers me the most is that there is no accountability. No one will take ownership and rectify the problem. It's always "the online people versus the in-store people" and no one can do anything about the other. I am disappointed with Xfinity after one and a half months and am Looking for another service provider. Best of luck if you decide to use them because this headache is not worth the money.

To my surprise, returning my equipment went VERY fast and the young man was extremely pleasantread more

My task in progress because my application is more complicated than normal. I needed an automotive…read moreremote key card. I shopped around but the most value was ordering it online from an automotive remote site. I interacted with Adam and he was able to show up on the early weekend morning. His text are professional and clear, & he included pictures. Mazda even as far back as 2005 (car was delayed as released as an 2006) used a key card. There is a chip in the card and one in the valet key. Mazda blank metal doesn't have all the slots cut into the blank either. Getting the car to go into reprogram mode didn't work because the console said I need two "keys." However there is a chip in both the medal key and card. So one transmitter set will work, or should have. He drove an hour back and forth to get the other generic key and had to modify it with a Dremel rotary tool so that the key would have tolerance to get through the tabs on the ignition. That didn't work and he is coming back next week to try again with just another chipped key. Didn't charge a trip fee for making a round trip, nor for the generic key that didn't work. I will spread the word within the MazdaSpeed group so they can get help if the elect to get the Mazda key card instead of generic. At least have one original card and one generic real key. At this point I elected to tow it to Mazda DG for them to try with my key. Because if I buy theirs, its considered an "installed electronic part," and they won't accept returns. Too risky for $400. If they can do it I just pay for 1/2 hour of programming. Worst case I have to buy their key, mine is also OEM (not eBay/Amazon). His company slogan should be either 'The Locksmith from Lockport,' or 'The Lockport Locksmith.'

If you need anything with keys or locks to be fixed, look no further! After having gone to TWO…read moredifferent ace hardwares to make copies of a house key (unsuccessfully!! They didn't work and I spent HOURS driving back and forth to have them try again, and ultimately to return them), Mark made copies of the key quickly and they worked! and when we needed some springs in our lock fixed, Mark was responsive! He told me he would arrive in about an hour, and about ten minutes out gave me a courtesy call to let me know he was close by. He not only fixed the lock, he also tightened up the screws and the screen door (that would slam shut previously). Mark was courteous, kind, professional and knowledgeable throughout the whole experience. Definitely going with Mark again anytime we have any key/lock needs! Thank you!

I recently moved and Carolyn at Forest seamlessly guided me through the process of getting…read moreeverything squared away in my new home. She attentively listened to my wants and needs and made it happen and she even showed up on the installation days to make sure everything was correct which was a plus. The techs, Brent, Giovanni and Anthony worked hard to get the job done in a timely manner, as I was on a time crunch to get everything up and running. They were clean and precise. Thank you, Forest!

My husband and I moved to the North Shore of Chicago last year from Arizona. We had an alarm system…read morein our prior house and wanted to duplicate the security system in our new house. I did a great deal of research into the available security companies in our area. We selected Forest Security after meeting with their representative, Tim, at our house. He was very knowledgeable and helpful. We felt extremely comfortable with Forest Security and decided to choose them over their competitors. We just had our security system installed by Jason and we could not be happier. Jason really understands security systems and took the time to share his expertise with us so that we had a comfort level with our system. We would highly recommend this company and feel we received superior service, product and really good value. Julie