Purpose and function High-current hot-bed output module designed to be controlled by Ramp1.4 series motherboards. Accepts a digital control signal in the 5–24 V range to switch power to the heated bed or other DC heating loads. Key benefits (why you need it) Reduces heat and stress on the motherboard by taking the high-current load off the Ramp1.4 board. Large heat sink improves thermal dissipation for longer, more reliable operation under continuous loads. Handles higher instantaneous transistor ratings while providing a practical continuous output capacity for common 3D-printer beds. Performance and specifications Large heat sink; recommended continuous output up to 30 A. Uses a high-quality tube component with a maximum rated current of 280 A. Digital control input range: 5–24 V, compatible with typical Ramp1.4 control outputs. Compatibility Specifically intended for use with Ramp1.4 series motherboards and other controllers that provide a 5–24 V digital control signal. Suitable for heated beds and other DC heating elements that require a switched high-current supply. Build and reliability Robust thermal design (large heat sink) for extended operation and improved component lifetime. High-rated tube component provides margin for demanding loads while the heat sink manages continuous current. Typical use scenarios Upgrading a 3D printer: Offload the heated bed current from a Ramp1.4 motherboard to reduce motherboard heating and improve reliability during long prints. Large-format or high-temperature heated beds: Provide stable switching for beds that draw higher current, using the module’s heat-sinking and high-rated tube. DC heating elements in small production setups: Use the module to switch and control heater cartridges or mats driven by a Ramp1.4-compatible controller with a 5–24 V digital signal. Practical notes Ensure wiring and power supply sizing match the module’s recommended continuous current (up to 30 A) and the load requirements. Mount the module to allow airflow around the heat sink for best thermal performance. Confirm control signal voltage is within the 5–24 V range provided by the Ramp1.4 or equivalent controller.