---
product_id: 219868027
title: "NEJE Laser Module Tester Digital PWM Wave Pulse 0.01%-100% Output, 0%-100% Input, 0Hz-20KHz VPP 3.3V-12V Digital Signal Generator Adjustable Frequency Duty Cycle"
brand: "neje"
price: "₩57446"
currency: KRW
in_stock: true
reviews_count: 3
url: https://www.desertcart.kr/products/219868027-neje-laser-module-tester-digital-pwm-wave-pulse-0-01
store_origin: KR
region: South Korea
---

# 0.01%-100% PWM precision 0Hz-20KHz adjustable frequency 3.3V-12V versatile voltage range NEJE Laser Module Tester Digital PWM Wave Pulse 0.01%-100% Output, 0%-100% Input, 0Hz-20KHz VPP 3.3V-12V Digital Signal Generator Adjustable Frequency Duty Cycle

**Brand:** neje
**Price:** ₩57446
**Availability:** ✅ In Stock

## Summary

> ⚡ Master your laser precision with NEJE’s ultimate PWM tester!

## Quick Answers

- **What is this?** NEJE Laser Module Tester Digital PWM Wave Pulse 0.01%-100% Output, 0%-100% Input, 0Hz-20KHz VPP 3.3V-12V Digital Signal Generator Adjustable Frequency Duty Cycle by neje
- **How much does it cost?** ₩57446 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/219868027-neje-laser-module-tester-digital-pwm-wave-pulse-0-01)

## Best For

- neje enthusiasts

## Why This Product

- Trusted neje brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Multi-Mode Display:** Real-time monitoring of temperature, PWM, and manual control status keeps you in command.
- • **Wide Frequency Range:** Adjust frequency seamlessly between 0Hz and 20KHz to match any laser module requirement.
- • **Precision PWM Control:** Fine-tune laser output from 0.01% to 100% duty cycle for ultimate customization.
- • **Robust Voltage Support:** Supports 3.3V to 12V input ensuring broad compatibility and stable performance.
- • **Plug & Play Compatibility:** Designed for NEJE laser modules (20W, 7W, 3500mW) with easy 4-pin connection for quick setup.

## Overview

The NEJE Laser Module Tester is a digital PWM wave pulse generator offering ultra-precise duty cycle control from 0.01% to 100%, adjustable frequency from 0Hz to 20KHz, and supports input voltages between 3.3V and 12V. It features a 3-mode display showing temperature, PWM, and manual control, designed for seamless integration with NEJE laser modules, enabling professionals to optimize laser performance with ease.

## Description

NEJELaser Module Tester Digital PWM wave pulse 0.01%-100% output, 0%-100% input, 0Hz-20KHz VPP 3.3V-12V Digital Signal Generator Adjustable Frequency Duty Cycle

## Features

- Laser Module Test Board: Power input: DC 12V;Output: PH2.0 4pin (12v,GND,PWM/TTL,Temperature)
- Mode: 3 modes (off, manual pwm, pwm / ttl in)display 3 kinds of information. Temperature, Pwm display and Manual PWM control.
- Easy To Use: It is suitable for assembling in NEJE laser module. Replacement of new accessories.You can also freely combine. With NEJE 20W, 7W, 3500mW laser module.
- Package List: 1 x NEJE PWM/Temperature tester board;1 x 4 Pin Cable(1000mm);
- High-Quality Service: If you have any questions, please feel free to contact us.

## Images

![NEJE Laser Module Tester Digital PWM Wave Pulse 0.01%-100% Output, 0%-100% Input, 0Hz-20KHz VPP 3.3V-12V Digital Signal Generator Adjustable Frequency Duty Cycle - Image 1](https://m.media-amazon.com/images/I/51Y9hf6slTL.jpg)

## Available Options

This product comes in different **Color** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ It is exactly as it says.  Good value.
*by D***K on April 19, 2021*

It is exactly as it says. Good value.

### ⭐ Cable is only 100mm not 1000mm
*by D***E on May 13, 2021*

I bought this just for the supposed 1000mm cable it advertises. I didn't even need the board. It came with a cable about 8 inches. I tried to "talk" to NEJE but they barely speak English. 3 times they aid the were sending me the 1000 mm cable and 3 times I got another board with a short cable. Just be aware that this has a very short cable, maybe 8 inches and the customer service is terrible. Also takes about 3 or 4 weeks if it isn't in stock, which all 3 times it wasnt, then I receive the wrong thing anyway. The 20 watt laser I bought from them does work well though, however I dont have any other lasers to compare it too.

### ⭐⭐⭐⭐⭐ hope it last a long time
*by W***E on August 10, 2021*

works great

---

## 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.kr/products/219868027-neje-laser-module-tester-digital-pwm-wave-pulse-0-01](https://www.desertcart.kr/products/219868027-neje-laser-module-tester-digital-pwm-wave-pulse-0-01)

---

*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-01*