Features 1、Smart Control: Can control the hearing of 3D printer extruder, hotbed, print head, etc. through 5‑24V digital signal. 2、Reliable Work: The MOSFET ensures excellent working performance, meanwhile the firm connection promise stable output. 3、Good Matching: Able to proceed control by using the heated bed output signal of Ramp1.4 and series, quick and reliable. 4、Better Design: Equipped with large heat sink, the 3D printer heating controller enables a maximum current up to 30A. 5、Easy to Install: Comes with a light weight and a compact size as well, the simple installation can be quickly finished. Specification Item Type: 3D Printer Heating Controller Material: PCB, aluminium heat sink. Package List 1 x 3D Printer Heating Controller