The group's principal activity is to develop, manufacture and distribute security alarm products for commercial and residential uses. the products of the group include alarm systems, automatic communicators, control panels, combination control panels/digital communicators and digital keypad systems. alarm systems consists of various detectors, a control panel, a digital keypad and signaling equipment. it also manufactures a variety of exit alarm locks and multi-zone fire alarm control panels. the group conducts its operations principally in the united states but has a foreign subsidiary, napco/alarm lock group international, s.a., located in the dominican republic where assemblies and subassemblies of goods are carried out. the group operates in north america, europe and south america.