Simplex 562-520H Fire Alarm Circuit Board Card

The Simplex 562-520H power supply board is a fire alarm circuit board card designed for use within Simplex fire alarm systems, functioning as a dedicated power supply module to support the panel and its essential field devices. This component is listed under several identifiers, including 562-520H, 562-520, and 8562-520, with references to a 8562-520HI variant on some catalogs; it is associated with the Tyco SimplexGrinnell brand lineage. According to distributor and parts references, the 562-520 family has been discontinued by the manufacturer, and SIM-8562-520 is presented as the direct replacement power supply board for legacy installations, meaning buyers replacing worn or failing units should look to that cross-reference for compatibility. When sourcing a replacement, the 8562-520 (and the HI variant where applicable) should be checked against the specific Simplex control panel model, cabinet, and wiring harness in the system documentation to ensure proper fit and operation. This description uses the product's exact identifiers and branding to distinguish it from other power supply modules and to help purchasers confirm that they are dealing with an authentic Simplex component intended for legacy panels and networks.