1. Continuing the characteristics of the series driver, it has good mute effect and expands the internal 16 to 256 subdivisions in the chip. 2. The driving current is larger, the maximum current can reach 2.5A, and the stable printing current can reach up to 1.8A. 3. Compared with other series drivers, the heating efficiency is lower and the heat dissipation effect is better. 4. Supports UART mode, perfect for use with MKS SGEN-L, no required. 5. When plugging in , be sure to orient the connector correctly to avoid reversing the polarity and damaging . Default current: 1.25a Maximum current: 2.5a Logic voltage: 3.3v/5v Input voltage: 5.5V-28v Subdivision: up to 1/256 Mode: dir/step,uart Colour:Black Material:PCB+Metal Package Contents: 1x Drive module 1x Heat sink 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.