UK-based private equity firm ECI Partners has acquired British international critical communications service provider CSL for an undisclosed sum. The investment is intended to support the expansion of CSL’s offering and customer base, both organically and through new acquisitions, ECI said in a statement.

Founded in 1996, the company provides secure signalling technology and connectivity solutions in the fire, security, and telehealth sectors. Held by Iconiq Capital, Norland Capital and RIT Capital Partners since 2016, CSL serves one million devices and monitors four billion events each month across the UK, the Nordics, Benelux, Spain, and Ireland.