Features: 1This DC motor has a built?in driver and a 100?line dual?channel encoder. 2This motor voltage test can run at 12?24V and is suitable for high?precision control. 312V no?load speed is about 3100 rpm, 24V no?load speed is about 6100 rpm. 4The motor rotates smoothly and is very wear?resistant, very practical. 5It is made of high quality steel, which has a longer service life and more durable. Condition:100% Brand New Item Type: DC Micro Brushless Servo Motor Optional Type: 12V, 24V Built?in driver, with 100?line dual?channel encoder, suitable for high?precision control. Voltage test can run at 12?24V, 12V no?load speed is about 3100 rpm, 24V no?load speed is about 6100 rpm. The motor is short. Simple Test Operation Method of Motor: Positive pole, negative pole, start line connects 1k resistor to the positive pole of the power supply to run. If you want to reverse, connect the positive and negative switching line to the 1k resistor and connect the positive pole of the power supply. Please switch between positive and negative poles when shutting down , So as not to damage the drive by instant forward and reverse surges. Brushless motor pay attention to the positive and negative is strictly prohibited to make mistakes, must use stabilized non?surge DC power supply. Package Included: 1 x DCMicro Brushless Servo Motor