S4-34412 12 Input Interface Module (Supervisory Inputs Only)S4 34412 12 Input Interface Module (Supervisory Inputs Only) S4 Input Interface modules are used to link the fire alarm system to other plant management devices such as sprinklers and security systems. They can also be used to link to a zone of conventional detectors. These modules are designed to be installed in custom panel to provide supervisory input to control plant via Vigilon System. The module connects to a loop circuit of a Vigilon fire alarm