A general add-on heated bed power expansion module for 3D printer Completely solve the hot bed power is too large and the load current issue. It can work with the Anet A8 With this addon module to your 3D printer motherboard you can lead the maximum current up to 15A Under the premise of normal heat dissipation, this module can work steadily under the condition of I(Max)=15A. Don't exceed 15A during the process.) If you intend to use heated bed with your 3D printer that uses a 12V power supply, then this module is recommended, else it may cause excessive current during times which may burn the connectors on the controller board, According to the thermal power of the bed, please choose the appropriate power supply, with sufficient margin. If it is large power heated, we suggest 24V power supply, under the same power requirements, current is less than 12 v