Description Support two head, double headed heating, a hot bed heating interface, support for dual color printing. Three road temperature sensor (PT100), 2 Road heating head temperature detection, 1 way hot bed temperature detection. Features - Color: As shown - Material: Plastic and metal - Size: 6x3.6x2cm - Five A4988 stepper motor driver, support 16 subdivision. - Power: DC 19-24V, it is recommended to use 10A 24V or more power supply - Support two head, double headed heating, a hot bed heating interface, support for dual color printing - Three road temperature sensor (PT100), 2 Road heating head temperature detection, 1 way hot bed temperature detection. - Three way limit switch, the default reset position 0, the default structure size: 230*225*205 - High scalability, can be used in conjunction with the large power driver board, support 57, 86 stepper motor. - Two Safety switches (can be connected with the temperature switch or emergency switch) - Three road fan interface: all the way PWM 24V adjustable fan interface, all the way 5V fixed voltage fan interface, all the way 24V fixed voltage fan interface. - Adjustable light LED lamp interface, adjustable fan interface, support the maximum 3A current. - Warm Tip: Dear buyer, Due to lighting effect,monitor's brightness,manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. sincerely hope that you can understand! Thank you!Package list: 1 x Control Board 1 x LCD screen