CNC Digital Microstep driver DM542 Stepper Motor Controller 2 phase Digital Stepper Motor Driver 20 50V DC Max 4.2A for Nema 17, Nema 23 and Nema 34 series stepper motor, Replace M542 M542H auspowers_batchsix break rooms and parties Please note that for break rooms and parties Product includes: ✔ 4 Definition of control signalPLS+: Step pulse signal input positive terminal or positive step pulse signal input positive terminalPLS : Step pulse signal input negative terminal or positive step pulse signal input negative terminalDIR+: Step direction signal input positive terminal or reverse step pulse signal input positive terminalDIR : Step direction signal input negative terminal or reverse step pulse signal input negative terminalENA+: Offline enable reset signal input positive terminalENA : Offline enable reset signal input negative terminalWhen the offline enable signal is valid each defect items could be refunded or reshipped