The Pulse Unit (OEM Part No. 3217987100) is an electrical spare part compatible with Epiroc underground mining equipment, including M2D, Boomer 291, Simba H1354, SIMBA H1254, Boomer 281, Boomer L2D, Boomer MD, S1D, S7D, and T1D models. Manufactured with electronic components and plastic housing, it functions as a pulse signal generation and control component in the electrical control system. The pulse unit provides accurate signal output, supports machine control functions, and improves system response reliability. Designed for demanding mining environments, this replacement electrical component provides dependable performance, durability, and long service life for equipment maintenance and repair applications.