Ajax Systems Reviews 11,354

Chose Ajax over Dahua/Hikvision and avoided contract-based systems like SimpliSafe/Verisure.

Brilliant decision — AJAX high quality kit, easy install, no contracts, and excellent technical support.

Alarm and video surveillance system...
Complete and modern alarm and video surveillance system. Expandable with various fire detectors, water leak detectors, and actuators.
Very well-designed and comprehensive app for every single component.
Very competent and quick support for troubleshooting

Great service. Every query responded to in minutes. The app works very well - no complaints. Highly recommend.

Very simply….it works. I will add to it now as it’s so easy to use. Stephen T.

Exceptional support at all hours of the day and night! I was having trouble configuring the app because my Belgian alarm company technician (nothing to do with Ajax) had given me the wrong instructions. I sent a message to Ajax support on a Friday evening around 7:45 PM Belgian time, hoping for a reply after the weekend. To my absolute surprise, I received a response within half an hour. Plus, there's a one-hour time difference with Ukraine (where Ajax is based). Our email conversation continued in impeccable French via a translator until 11:30 PM (12:30 AM their time) until I finally managed to configure the app correctly. Bravo to the Ajax support team, and long live Ukraine!

Ajax support has sent many emails to understand the issue I noticed about the app and to meet my needs very carefully. A deeply professional work by Ajax team: well done!

I am highly impressed with the Ajax Support Team. Not only did they respond to my technical inquiry on a Sunday, but the level of expertise was top-notch. They immediately understood the hardware diagnosis regarding the PSU capacitors and provided clear, professional guidance including official alternatives (12V PSU). This is how premium security support should look like. Fast, knowledgeable, and straight to the point. Special thanks to the team for the battery calibration tips. Five stars well deserved!

Samedi soir à 19h.
Un problème sur un compte, adresse email plus valide, mot de passe oublié…
Ce problème a été parfaitement réglé par le service client.
Merci à toute l’équipe Ajax 👍🏻

Saturday evening at 7PM
An issue with an account, password forgotten and email address no more reachable (old address)
The customer service was very helpful and that issue fixed in a few minutes.
Thanks a lot 👍🏻👌

Great systems with lots of ability to integrate. Once door lock integration is available in the US, it will be perfect. I like that fact that Ajax is always innovating and adding new products to their lineup!

Easy to fit and operate. Only problem is lack of choice of the colour of the sensors. Had to pay another £40 each for the dark oak colour.

Ajax was recommended by my dad. Also at my company we use it for securing assets. Really easy to install, setup and to use by yourself. Even my wife (who is a smart lady, but not so 'tech-savy') found it to be easy and usefull. Clear instructions. On top of that highly customizable settings for all connected devices. Two things to improve in my view are (1) the ai recognision system in the HL cameras often identifies birds and bugs as humans. Which makes it not viable to link alarms to human activity, and (2) the payment plan to get recordings from the doorbell is a bit disproportional. I appreciate ajax have to maintain servers (also for the rest of their free services), but it seems a bit skewed to put it all on the doorbell. I wouldn't mind paying one or two euros per month for all services to be kept up, but a jump from 0 to 25 just for cloud storage on one device feels extreme.

Always great support and quick responses from the team! Keep up the great work there!

Luv it so easy to set and use with the phone.

Excellent security system.
Works instantly and can see what triggered the alarm immediately. Have cut our loses to zero since installing the Ajax system

Quick and helpful response. Everything works now as planned.

Great reliable system easy to control from the app.

Great support !
Ajax support team did a great job by following up my case until we solve it. They were patient all the time and even proactive by kindly checking up.

Devices are unreliable and Ajax don't seem to care. Ajax have no interest in supporting their products outside their EU mandated and strictly enforced 2 year warranty policy.

Had several alarm sensors installed. One started malfunctioning after about a year. Unfortunately, I naïvely gave Ajax the benefit of the doubt and I disabled it believing I could restore or remedy the problem at a later stage. Then a second device started malfunctioning. The company I bought the sensors from had ceased trading. After finding this out I informed Ajax directly of the issues less than 2 months outside the 2 year warranty window. Their response was disappointing. They were quick to respond to messages but made very burdensome requests to test the devices, e.g. test in a light proof box for several hours in the hope the device rights itself. They also directed me to enable back door access to my space which they later said could not identify and diagnose the issues. That is hard to believe. Why request access in the first place?

All in all in my experience Ajax sensors will go wrong, if you buy hope they go wrong within 2 years and you notify Ajax immediately. After notifying they will ask you to jump through hoops to confirm malfunctions, and then provide little to no tangible help. For example, suggesting buying a replacement device or a full replacement service from a currently trading company is not helpful.

Edit with more

The device was bought in March 2023. The issue was reported to Ajax in May 2025 after learning the original seller ceased trading (not immediately obvious until their website went offline). My correspondence outlines an issue and that it had already been happening for some time.

Hi,

I am successfully using many Ajax alarm products. However I am having recurring issues with one CombiProtect sensor of the several installed in our house.

This one device triggers incorrectly and too frequently. I have tried swapping it to other locations and adjusting the configurations of the device, e.g. lowering the sensitivity. However nothing has been successful and I have resorted to disabling it long term.

I was wondering if you could try help resolve the issue(s) with this sensor? Its QR code id is [redacted id].

I received the following response. I mentioned in the initial correspondence that I had tried the device in multiple locations, with multiple configurations, i.e. low detection sensitivity, and had resorted to disabling it. After detailing this and providing the id, the requests to "understand which of sensors is being triggered and what exactly causes it or may potentially cause it" did not make sense as Ajax had the id and I had already said I had tried several locations and configurations. So as you can see there is bureaucracy for the sake of frustrating the customer here.

Thank you for lettings us know about your situation!

We kindly ask you to give us few insights about your current situation:
1. Share with us screenshots from your Ajax application of alarm notifications being sent from your CombiProtect.

2. Share with us screenshot of your CombiProtect status.

3. Share with us a short video that indicates an example of alarm being triggered.
It is vital for us to understand which of sensors is being triggered and what exactly causes it or may potentially cause it.

My go to Alarm system for domestic and commercial alarm installation. System is super easy to install and customers love the usability of it. Best of all is the technical help, always there even on the weekends and public holidays when small installation companies are working and need help. Highly recommended product and company