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Control box parameters: Operating Voltage: AC110V Control unit: Toroidal transformer + PWM power supply module + TB6560 stepping motor drive Computer connection: USB port Command code: G code Protection: Emergency stop button. The item "CNC Router Engraver Controller Box For 4 Axis USB 3040 Engraving Milling Machine" is in sale since Monday, July 19, 2021. This item is in the category "Business & Industrial\CNC, Metalworking & Manufacturing\Woodworking Equipment\Routers". The seller is "altheremma" and is located in Chino, California. This item can be shipped to United States.