Bosch FLM-420/4-CON-S Conventional Detector Interface Module, Surface-Mounted

FLM-420/4-CON-S is a two-primary-line interface module that connects conventional detector lines to the addressable LSN loop. Two- or four-wire detectors can be run as two separate branches or as a single ring, with sensing settings independently programmed for each branch. Primary lines are continuously monitored for alarm, short circuit, and cable break. Its surface-mounted box of 126 x 126 x 71 mm eliminates the need for wall cutting when upgrading existing installations.