MK2A 300*200*3.0mm RepRap RAMPS 1.4 PCB PCB Aluminum Heat bed + LED Resistor + Cable + Thermistor For 3D Printer MK2B 314x214x3
Introduction:
MK2A Aluminum Heatbed choose two working voltage of 12V and 24V, more practical; MK2A aluminum plate is used in the process, because the aluminum plate material is expensive and production costs tend to be ordinary glass plate expensive, so, MK2A are expensive.
12V connection: a cable connected to one another while connected to a wire 2,3.
24V connection: a cable connection 2, in addition to a cable connection 3 (1 left unconnected).
The new version of the circuit, whether connected 12V, or 24V, Power are stable