The FLM-420 / 4CON Conventional Interface Module enables conventional detectors to be connected to LSN fire panels via a 4-wire supply network (LSN with external power supply). The interface modules in the 420 Series are specifically designed for connection to the Ground Safety Network (LSN) and test comprehensive functionality. In classic mode, the interface modules can be connected to all conventional LSN fire panels, which can be selected via the integrated rotary switch. It can be used with FPA-5000, FPA-1200, BZ-500LSN, UEZ2000LSN and UGM2020 Classic LSN fire Panels.