The Call for Assistance system is designed for use in hospitals, public rest-rooms, and especially for handicapped areas where a call-for-help or an emergency switch is required. The system consists of a horn/strobe for audible and visual signalling, an emergency pull cord station for activation and a transformer for AC power. The Call For Assistance components can be purchased separately or as a kit (Cat. No. 6538C-G5). Kit consists of: 6536-G5 Horn/Strobe. 592 Transformer. 9504-1001 Pull Cord Station.