A workforce management firm has been acquired by global group Assa Abloy.
Solihull-based Biosite Systems creates products aimed at helping security, staff management and safety on construction sites, including an access system which recognises low-quality fingerprints of workers.
It was founded in 2010 and has grown to employ around 140 staff and reach £14 million in turnover.
Swedish group Assa Abloy specialises in locks, gates and entrance systems and operates across the world.
It has 32 offices across the country including in Wolverhampton, Telford, Walsall and its UK headquarters in Willenhall.
Biosite Systems will help to spearhead its new construction arm as part of its global solutions division, offering electronic access, software and identity products and services.
Biosite Systems' managing director Li Wang said: "With a shared vision to improve construction productivity through digitisation, a partnership with Assa Abloy made perfect sense.
"It has the means and reach to enable us to achieve our ambitious growth plans while giving us autonomy to develop the innovative technology-enabled solutions we are known for."
Assa Abloy chief executive Nico Delvaux said: "I am very pleased to welcome Biosite Systems and its employees into the group.
"The company will reinforce our current offering within solutions for access control and will provide complementary growth opportunities."
PwC acted as lead financial adviser to Biosite Systems on the undisclosed deal.
Director Ian Birch said: "Biosite Systems is an exceptional fast growth business, run by an exceptional management team and we look forward to seeing the business thrive during its next growth phase with support from Assa Abloy."
Law firm Browne Jacobson also acted on the deal.