My opinion, as a locksmith who fits them: the Ajax alarm is one of the best and most secure systems on the market for homes and businesses. It is the first wireless alarm certified to the highest security grade (EN 50131 Grade 3), its radio protocol is one of the most advanced, and it does not tie you into a monthly fee. Here is my honest opinion — the good and the caveats — so you can decide with confidence.
Is Ajax the best alarm? My opinion
After installing and configuring many systems, for most homes and businesses in Fuengirola and Mijas, Ajax offers the best balance of security, reliability and cost. It is not the cheapest upfront, but it is the one that causes the fewest problems and protects best. And it is not just my view: according to its 2025 report, it already protects over 4.5 million people in 35 countries and won 18 awards that year (including the Red Dot for design).
Why I like it (the good)
- Top wireless certification: it is the first wireless alarm certified EN 50131 Grade 3, the highest grade for demanding home and commercial use.
- Very advanced radio protocol (Jeweller): the link between sensors and hub is encrypted, hops frequencies and detects jamming attempts — if someone tries to block the signal, the alarm notices and alerts you.
- Real-time phone alerts: a sensor triggers and you know instantly, wherever you are. Ideal for second homes.
- No building works: it is wireless; fitted in a few hours with no drilling.
- Reliable, huge battery life: some hubs run up to 4 years on battery. Little maintenance.
- Easy to expand: add motion, door/window, glass-break, smoke or flood sensors whenever you want.
The caveats (to be honest)
- Not the cheapest upfront — but good value for what it protects and because you avoid compulsory fees.
- It needs a connection (Wi-Fi and/or SIM) to send the alerts.
- A monitoring station (police response) is optional and does carry a fee — but only if you want it.
Does it have a monthly fee? No, unless you want one
This is the most common question. With Ajax, phone alerts are free: the system notifies you directly, with nothing to pay monthly. There is only a fee if you choose to add a monitoring station (CRA) with 24/7 surveillance and police response. That is optional. Many clients keep just the free phone alerts; others prefer the monitoring for peace of mind. I explain both options without any pressure.
We install it, in person
I do not use subcontractors: I install and configure the Ajax alarm myself, show you how to use it and leave the system running, with a fixed price before starting and an invoice. Being wireless, in most homes it is fitted in a few hours with no works.
Frequently asked questions
Is Ajax the best alarm?
In my opinion as an installer, for most homes and businesses yes: the best balance of security, reliability and cost. It is the first wireless alarm certified EN 50131 Grade 3, used by over 4.5 million people in 35 countries.
Does the Ajax alarm have a monthly fee?
Not compulsory. Phone alerts are free. There is only a fee if you add a monitoring station (CRA), which is optional.
Is it secure against jammers?
Yes. The Jeweller protocol is encrypted, hops frequencies and detects jamming attempts, alerting you if someone tries to block the signal.
Do you install it yourselves?
Yes, I install and configure it in person, no subcontractors, with a fixed price and an invoice. No works.
Want an Ajax alarm in Fuengirola or Mijas?
I'm Santiago, an APFC-certified locksmith and installer in Fuengirola and Mijas. I install and configure your Ajax alarm in person, with no works, a fixed price and an invoice, and I explain whether you need it with or without a monitoring fee. Call or message me on WhatsApp for no-obligation advice.
Need a locksmith in Fuengirola?
Santiago answers in person, with a closed quote before starting.
