Industrial 556-256 Circuit Board Module Assembly

This Industrial 556-256 Circuit Board Module Assembly is a lot of two simplex modules, comprising part numbers 556-256 and 556-048, designed for fire alarm factory motherboard circuit boards. These modules are used as interchangeable components within fire alarm hardware to support the system's board-level functions. The listing specifies two units in a single lot, ideal for repairs or stocking spare parts for ongoing fire alarm maintenance. Each module follows standard simplex construction typical of factory fire alarm motherboard circuitry, enabling technicians to match the exact variant required by the panel or installation. Use this lot when you need authentic replacements for the 556-256 and 556-048 positions on a fire alarm motherboard assembly.