Features: Brand new and high quality Support-voltage of DC4.5-DC36V; Meet the needs of high-speed printing, support up to 36V drive motor, and support up to 2.1Acurrent; Supports 256 high segmentation. Real-time monitoring of the temperature of the motor and drive, TMC2240 can directly report the temperature of its own chip; Supports analog-signal input Please pay attention to the direction when inserting the TMC2240 drive, and do not reverse it to avoid damaging drive. Supports the Sensorless Homing-function. The TMC2240 driver is a new type of silent driver that supports a higher-voltage and a larger current output. If you use high-voltage (greater than 24V) or high current (greater than 1.2A), you must use active cooling to avoid overheating drive. TMC2240 defaults to SPI-mode at the factory, and we recommend that you use SPI-mode; If you need to use UART-mode, you need to manually short together the solder joints at R4 position with-tin; To avoid damaging drive, it is not recommend to try it easily without welding experience. We recommend that you choose TMC2209 for UART-mode drive. Specifications: Material:PCB Suports High Subdivision: 256 microsteps Supports-Voltage: DC4.5-36V Supports Maximum Current: IFS=3A Low on-resistance: Rdson 230mΩ Size:Approx.20.32x22.17x15.24mm/0.8x0.9x0.6inches Package Includes: 1x Stepper Motor Driver note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.