The Siemens LMU54.046D149 PCB is a crucial component for a residential boiler, designed by the trusted brand Siemens. With an energy efficiency rating of A+++, this green-coloured circuit board ensures optimal performance for your heating system. Operating at 230V, this PCB is compatible with the model LMU34.210A149, providing efficient and reliable control for your boiler. Ideal for maintaining and upgrading your central heating system, this Siemens PCB is a top choice for any home looking to improve their heating efficiency.