Transformer, Compatible with Brand Crown Boiler, Compatible with Manufacturer Model Number BSI069, BSI103, BSI138, BSI172, BSI207, BSI241, BSI276, BSI311, BSI346, BSI380, Compatible with Grainger Part Number 6DKG7, 6DKG8, 6DKG9, 6DKH0, 6DKH1, 6DKH2, Compatible with Series BSI, Primary Voltage 24V