--- product_id: 105192323 title: "2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router" brand: "longs motor" price: "788 kr" currency: DKK in_stock: true reviews_count: 1 url: https://www.desertcart.dk/products/105192323-2-phase-stepper-motor-driver-dm542a-1-0-4-2a store_origin: DK region: Denmark --- # 18-50V DC power range High-speed photoelectric isolation Max 4.2A output current 2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router **Brand:** longs motor **Price:** 788 kr **Availability:** ✅ In Stock ## Summary > ⚙️ Drive Your CNC Like a Pro – Precision Meets Power! ## Quick Answers - **What is this?** 2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router by longs motor - **How much does it cost?** 788 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/105192323-2-phase-stepper-motor-driver-dm542a-1-0-4-2a) ## Best For - longs motor enthusiasts ## Why This Product - Trusted longs motor brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Perform:** Reliable H-bridge bipolar constant phase flow driver for smooth, accurate motion - • **Power Your Precision:** Supports a wide 18-50V DC input for versatile CNC setups - • **Unleash Maximum Torque:** Delivers up to 4.2A output current for robust motor control - • **Universal Compatibility:** Optimized for 2-phase stepper motors (42 & 57 types) with multiple wiring options - • **Signal Integrity Secured:** High-speed photoelectric isolation ensures noise-free input signals ## Overview The DM542A is a high-performance 2-phase stepper motor driver designed for CNC routers, supporting 18-50V DC input and delivering up to 4.2A output current. Featuring high-speed photoelectric isolation for signal clarity and compatibility with 42 and 57 type stepper motors, it ensures precise, reliable motion control in demanding industrial applications. ## Description Features:High performance, low priceAverage current control, 2-phase sinusoidal output current driveSupply voltage from 18VDC to 50VDCOpto-isolated signal I/OOvervoltage, under voltage, overcorrect, phase short circuit protection15 channels subdivision and automatic idle-current reduction8 channels output phase current settingOffline command input terminalMotor torque is related with speed, but not related with step/revolutionHigh start speedHigh hording torque under high speed ## Features - *18V-50V DC power supply. - *H-bridge bipolar constant phase flow driver. - *The maximum output current is 4.2A . - *The input signal high-speed photoelectric isolatio. - *For step motor: 42, 57 type 2 phase 4 phase (4 / 6 / 8 line). ## Technical Specifications | Specification | Value | |---------------|-------| | Operating Temperature | 6E+1 Degrees Celsius | | Manufacturer | longs motor | | Item Weight | 13.9 ounces | | Package Dimensions | 13.46 x 5.83 x 3.78 inches | | Is Discontinued By Manufacturer | No | | Batteries Included? | No | | Batteries Required? | No | ## Product Details - **Color:** Black - **Brand:** Longs Motor - **Voltage:** 18 Volts - **Material:** Copper - **Display Type:** LCD or LED ## Images ![2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - Image 1](https://m.media-amazon.com/images/I/813qhb9dhyL.jpg) ![2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - Image 2](https://m.media-amazon.com/images/I/71+7c0GSkOL.jpg) ![2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - Image 3](https://m.media-amazon.com/images/I/71SwSz3oL-L.jpg) ![2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - Image 4](https://m.media-amazon.com/images/I/616m5mvLcCL.jpg) ![2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - Image 5](https://m.media-amazon.com/images/I/71mYmW-0bvL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Direct replacement *by B***G on July 31, 2019* Couldn't get less expensive units to work. This plugged and played. ## Frequently Bought Together - Longs Motor 2-Phase Stepper motor driver DM542A 1.0-4.2A 18-50VDC for CNC Router - DROK 48V Power Supply, AC 110V/220V to DC 0-48V 10A 480W Buck Converter, Adjustable Variable LED Adapter Regulated 5V 12V 24V 30V 36V 48V Volt Voltage Transformer 10A Amp Charger for Lab CCTV - RATTMMOTOR ZBX80 100mm Stroke CNC Linear Stage Motion Actuator X Y Z Axis Linear Slide Rail Aluminum Alloy Cross Sliding Table Linear Rail Guide SFU1605 Ballscrew+Nema23 57 Stepper Motor for CNC --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.dk/products/105192323-2-phase-stepper-motor-driver-dm542a-1-0-4-2a](https://www.desertcart.dk/products/105192323-2-phase-stepper-motor-driver-dm542a-1-0-4-2a) --- *Product available on Desertcart Denmark* *Store origin: DK* *Last updated: 2026-05-12*