1Original stepper motor driver chip, the current is selected by DIP switch 2Large area radiator, not afraid of using in high temperature environment 3Seven subdivisions adjustable, automatic half-current to reduce heat generation, high-speed optocoupler isolation for the interface 4Possess input voltage reverse connection protection, applicable stepper motor for 42,57,86 type 2 5Powerful anti-high frequency interference ability, and overheating, overcurrent, short circuit protection Item Type: Stepper Motor Driver Material: ABS Model: TB6600 Input Voltage: DC9-40V Temperature/Working Temperature: -10~45 Storage temperature: -40~70 Product Description and Parameters: 4A TB6600 stepper motor driver controller 9~40V TTL 16 microstep CNC 1 axis 2 or 4 phase stepper motor for 42, 57, 86 Function: This drive is an upgraded version TB6600 is the highest segment of the 32 market segments and is suitable for highly segmented applications. Applicable Stepping Motor: 42,57,86 type 2 Phase: 4 Phase(4 wire 6 wire line 8) 1. 9V-40V DC power supply; 2. H-bridge bipolar constant current drive; 3. Eight output currents are optional, Maximum Output Current: 4.0A; 4, 6 subdivision modes are available, up to 32 subdivisions; 5. High-speed optical isolation of input signals; 6. Common anode single pulse interface standard; 7. Offline hold function; 8. The semi-enclosed chassis can adapt to a harder environment; 9. Provide energy-saving semi-automatic current locking function; 10. Built-in temperature protection and overcurrent protection. 1 x Stepper Motor Driver 1. It is an updated version of TB6600 4A stepper motor driver. 2. The practicality of this type is the same as the TB6600 4A drive, but its appearance is different from TB6600 4A stepper motor driver.