Please note: This is a Sole Source Notification. Federal Signal Corporation (FSC) is the sole manufacturer of the equipment which comprises the mass notification equipment utilized within Pierce Co Washington. Internal components and finished goods/hardware of Pierce County's Federal Signal system is manufactured only at our Universtiy Park, IL location. Furthermore, the solar kit assemblies with solar regulators are specified uniquely to the specifications required for the charging system of outdoor controllers for synchronized functionality. Additionally, the satellite kits are designed solely to interface with Federal Signal Ultravoice equipment and work seamlessly in tangent with proprietary Commander Software and Satellite Service managed by FSC. Federal Signal takes pride in being able to offer our customers complete system solutions for your emergency notification needs. We are confident that our solution continues to provide exceptional value with the benefit of dealing directly with the manufacturer.