Features: Each of our product will be functional tested before sale. The MOS tube is of high performance and has outstanding work reliability. Large heat sink, the maximum current can be up to 30A. The hot bed output signal control of the Ramp1.4 and MKS series motherboards can be used directly. The heating controller can be controlled with a digital signal of 5-24v. Specification: Item Type:Printer Heating Controller  Control Signal Voltage:5~24V Size:8.8 x 6.6 x 2.6cm / 3.46 x 2.6 x 1.02in Wiring Method: 1, Power is connected to the power supply, pay attention to positive and negative. 2, Hotbed connected to the hot bed heating line, pay attention to positive and negative. 3. Direct digital control signals can be connected to Gnd and D8. 4. Connect the control signal from the Ramps1.4 or MKS motherboard MOS tube to -Bed+. 5. The two sets of control signals can only be connected to one group. Package List: 1 x Heating Controller MKS MOS with Heat Sink