The CU2500 is a generator-set controller. It is used on generator sets from Volvo Penta, including the TAMD122A HE, TAMD74A HE and TAMD74A RC.
Also fitted to: Volvo Penta TAMD103A RC / HCM434C-1, Volvo Penta TAMD103A RC / HCM434D-1, Volvo Penta TAMD103A RC / HCM434E-1.