Brand new and high quality. Position/speed/torque closed-loop, it can run at high speed without losing step. Field-Oriented control, low noise, low vibration and low calorific. 4 Half bridge driver with 8 MOSFET, high operating efficiency. 14 Bit magnetic encoder, high angle resolution. Support 1-256 subdivision,odd subdivision is also avaible.(Such as 11 subdivision) Maximum speed 1000RPM.Support motors with 0.9 degree or 1.8 degree . The maximum printing speed can reach 150-180mm/s and easy to install and wire. With USART interface, you can connect the computer by serial port, for parameter adjustment and query. Board Type:MKS SERVO42C V1.0 Microprocessor:Crotex-M0+ Mootor Driver:4 Half bridge driver with 8 MOSFET Input Voltage:7V-28V Encoder:14 Bit Magnetic Encoder Adjustable Current Range:0-3000mA Subdivision:1-256(Default 16) Maximum Speed:1000RPM Angle Resolution:0.08 degree The Frequency of Update:Position 10Khz/Velocity 10Khz/Torque 20Khz Type:A:MKS SERVO42C+Motor/B:MKS SERVO42C V1.0 Colour:Black Material:PC+Metal Size:PCBA Size:approx 39x35.8mm/1.54x1.41in Package Contents: 1Set x MKS SERVO42C+Motor / 1Set x MKS SERVO42C V1.0 Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.