Independent guide
By Linus Palmqvist, Head of Operations Reviewed by Simon Nilsson Last reviewed ADT is a familiar name worldwide, but in Spain it is now sold by Sector Alarm, which bought the business in June 2026. That changes who your contract is with, so it is worth checking the paperwork carefully.
A recognisable name in the middle of a change of ownership, so read the paperwork closely.
The facts worth knowing before you talk to them, and the ones you can check yourself.
Sector Alarm absorbed the ADT Spain business in June 2026, confirmed in the official filing.
An introductory rate for the first months, then a standard one. Ask for both figures.
Business contracts run to 36 months on the current offer.
The system is changing hands, so confirm what you are being quoted rather than assuming.
The current offer covers all three for tax purposes. Confirm your own address with them.
If yours predates 2026 the company name will differ. Registered then as DGP 2817.
The name that should appear on a new contract. Registered as DGP 1557.
Go to ADT yourself, or let us handle the Spanish side. Both work.
Free, and you are not committed to ADT.
The change of ownership is recent, so confirm these three before you sign anything.
New contracts should name Sector Alarm Spain, S.A.U. Check the quote matches before you sign anything.
Ask what equipment and which connections are included, in writing. Older ADT descriptions still circulate online.
The opening rate runs for the first few months, then moves to the standard one. Ask for both figures and the date they change.
Some ADT material exists in English, though the transition to Sector Alarm makes it harder to say what will still be there next year.
English-facing material and an app interface carried over from the previous owner.
No company in this market promises an English-speaking operator when an alarm goes off. Plan on that conversation being in Spanish.
Spanish, like every alarm contract here. That is the part we do with you.
Worth reading a few yourself rather than going on the number alone.
around 3,300 reviews. The lowest of the six, though on far fewer reviews. Checked 25 July 2026.
Most of these reviews describe the business before the merger, so they say more about the old ADT than about what you would buy today. The praise goes to the technicians, and the complaints to billing and price rises after the opening period.
Six companies dominate monitored home alarms in Spain, listed alphabetically. The full table is on the comparison page.
Still have questions?
Send it over. We will read it in English, check which company it is with, and compare it against the rest of the market.
Compare your options in EnglishWe earn a commission if you set up an alarm through us. It does not change what is on this page. We cannot arrange every company we write about. The comparison is ordered alphabetically, not by what we earn. If a company we cannot arrange suits you better, we will say so.
Written by
Head of Operations at Settlewell
Linus moved from Sweden to Málaga in 2021 and set his own home up here, so most of this he has already done the hard way once. Before Settlewell he spent years at Workwide, the cross-border recruiter that has helped over 10,000 people into jobs abroad, latterly as its Head of Recruitment and Operations. He speaks Spanish, lives in Málaga with his partner, and spends his days on the phone to Spanish providers.
Company identity and registration come from the national register of security companies, and the change of ownership from the official BORME filing. Contract points come from the current ADT offer, and review figures are a dated snapshot from one named platform.
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