The Riverside Company, a global investment firm focused on the smaller end of the middle market, announces it has invested in Action Technology Systems as an add-on to its fire and life safety platform, Performance Systems Integration. Based in Portland, Oregon, PSI is a leading single source provider of fire and life safety services in the Pacific Northwest, Mountain West, Northern California and the Pacific. The company provides customers with fire and life safety services including system inspection, service and monitoring, equipment and first-aid sales and cylinder repairs as well as installations for new construction and retrofits. 

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