ST Hälytys joins Prosero Security Group


Prosero is strengthening its presence in the Helsinki region through the acquisition of ST Hälytys Oy, a company offering full-service solutions for fire alarms, emergency lighting, burglar alarms, CCTV, access systems, and door intercoms.

ST Hälytys Oy was founded in 1992, and right from the start, the firm established a strong reputation as a leading security provider in the capital city region, with a competitive offering of design, installation, and commissioning as well as maintenance and service of fire alarms, emergency lighting, burglar alarms, CCTV, access systems, and door intercoms. The company drives sales by focusing on service and the aftersales market. Thanks to many years of fruitful cooperation, ST Hälytys Oy enjoys recurring assignments from a loyal customer base consisting primarily of infrastructure and other public-sector organizations, private companies, construction firms, property owners/administrators, and retailers.

During 2022, ST Hälytys Oy’s turnover amounted to EUR 2.8 million, generated by business throughout the Helsinki region. The company has 12 employees working from the office in Vanda.

“As part of Prosero, we’ll be able to benefit from the group’s strong financial standing and the purchasing advantages offered by such a large group. This will give us a significant competitive edge while enabling more successful procurement processes. Joining Prosero allows us to maintain the flexibility of a smaller company, and at the same time we can enjoy the advantages of being part of a larger group,” says Risto Tonteri, CEO for ST Hälytys.

“ST Hälytys represents an important move for Prosero in the Helsinki region and Finland as a whole. We’ve already seen examples of the firm’s exceptional service-mindedness and professionalism. They will be an asset for the group. We’re very happy that ST Hälytys Oy has chosen to become part of Prosero,” says Jyri Aho, Country Manager for Prosero. 

About Prosero Security Group

Prosero is the leading Nordic supplier of technical security solutions, with years of experience and a strong local presence in over 120 locations in Sweden, Norway, Denmark, and Finland.

Prosero is made up of local leaders in security – a network that unites the local presence and flexibility of smaller companies with a larger company’s stability and digital expertise. Prosero delivers competence and provides cutting-edge security technology that is adapted to each customer’s needs and applications. Its service offering includes consulting, integration, operations, maintenance, service, and monitoring of alarms, access control, camera systems, locks, and fire safety. Its total turnover amounts to over SEK 3.2 billion.

Contact persons:

Jyri Aho
Country Manager Finland, Prosero
Tel: +358 400 813 759

Risto Tonteri
CEO, ST Hälytys
Tel.: +358 400 462 891

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