---
product_id: 97097141
title: "Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator"
brand: "drok"
price: "$788"
currency: MXN
in_stock: true
reviews_count: 8
category: "Drok"
url: https://www.desertcart.mx/products/97097141-signal-generator-dc-3-3-30v-function-generator-5-30ma
store_origin: MX
region: Mexico
---

# 3.3-30V wide voltage range 1Hz-150kHz ultra-wide frequency 0-100% adjustable duty cycle Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator

**Brand:** drok
**Price:** $788
**Availability:** ✅ In Stock

## Summary

> ⚙️ Unlock precision signal mastery — never miss a beat in your innovation flow!

## Quick Answers

- **What is this?** Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator by drok
- **How much does it cost?** $788 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.mx](https://www.desertcart.mx/products/97097141-signal-generator-dc-3-3-30v-function-generator-5-30ma)

## Best For

- drok enthusiasts

## Why This Product

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

## Key Features

- • **Powerful Versatility:** Operates from 3.3V to 30V, supporting diverse projects from MCU pulse generation to motor control.
- • **Clear Real-Time Feedback:** Integrated LCD displays frequency and duty cycle values for instant, confident adjustments.
- • **Effortless Data Retention:** Auto-save settings ensure your custom parameters persist even after power off—no resets needed.
- • **Plug & Play Serial Control:** Supports TTL serial communication for smooth integration with Raspberry Pi and other controllers.
- • **Precision at Your Fingertips:** High-accuracy frequency control with 4 auto-switching ranges for seamless tuning.

## Overview

The DROK Signal Generator is a compact, high-precision function generator supporting DC 3.3-30V input, frequency range from 1Hz to 150kHz, and adjustable duty cycle from 0-100%. Featuring an LCD display, auto-saving parameters, and TTL serial communication, it’s ideal for experimental development, motor drivers, MCU pulse generation, and PWM control circuits. Its versatile voltage range and user-friendly interface make it a must-have tool for engineers and makers aiming for flawless signal output.

## Description

Parameter: 1. Working voltage: DC 3.3v~30v 2. Frequency range: 1Hz~150kHz (divided into 4 ranges); 3. Frequency precision: 2% of each range; 4. Signal load capacity: output current is about 5-30mA; 5. Output Amplitude: PWM amplitude equal to the input voltage value 6. Environment Temperature Range: -20~+70℃ 7. Duty cycle range: 0-100%.Application: 1. As square wave signal generator for experimental development; 2. As square wave signal generator for motor driver; 3. As adjustable pulse generator for MCU; 4. As pulse generator, control related circuits (PWM dimming, speed regulating).Setting Parameters: There are 4 independent buttons on the module for setting the frequency value and the duty cycle value. Supports short press (increase or decrease 1 unit by 1 unit) and long press (fast increase or decrease). All setting parameters will be saved when powered off to achieve data guaranteed.Frequency Display Instruction: The frequency is divided into 4 ranges and switched automatically. 1. XXX (without decimal point): minimum unit is 1Hz, value range is 1Hz~999Hz. 2. X.XX (the decimal point is in the hundred digit): minimum unit is 0.01kHz, value range is 1.00kHz~9.99kHz. 3. XX.X (the decimal point is in the ten digit): minimum unit is 0.1kHz; value range is 10.0kHz~99.9kHz. 4. X.X.X (full decimal point): the minimum unit is 1kHz; the value range is 1kHz~150kHze.g. Frequency displays 100 represents 100Hz; displays 1.01 represents 1.01kHz; displays 54.1 represents 54.1kHz; displays 1.2.4 represents 124kHzPackage Included: 1x Signal Generator

Review: Works great! - This is an easy, cheap way to generate test frequencies. I'm using it to dial in audio frequencies for chiptune projects. It's very simple to use the included serial functionality. A few jumpers to a Raspberry Pi or TTL serial adapter and you're good to go.
Review: Good product - Easy to use and works as advertised. Just purchased a second one for another project.

## Features

- PARAMETER ---- operating voltage range DC 3.3v~30v; frequency range 1Hz-150kHz; output current 5-30mA; duty cycle range 0-100%.
- APPLICATION ---- as square wave signal generator for experimental development; as square wave signal generator for motor driver; as adjustable pulse generator for MCU; as pulse generator, control related circuits (PWM dimming, speed regulating).
- SERIAL COMMUNICATION ---- support serial communication, TTL level.
- DATA AUTO STORAGE ---- all parameters will be saved automatically after setting and therefore won't lose when power off.
- OTHER FEATURES ---- with LCD display to display frequency and duty cycle value; with case; PWM output, can set frequency and duty cycle separately by buttons; frequency value is divided into 4 range and switched automatically, with high precision.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07KVYQ78K |
| Best Sellers Rank | #19,957 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Function Generators |
| Brand | DROK |
| Brand Name | DROK |
| Customer Reviews | 4.5 out of 5 stars 304 Reviews |
| Manufacturer | DROK |
| Material Type | Plastic, Lcd |
| Maximum Supply Voltage | 30 Volts (DC) |
| Minimum Supply Voltage | 3.3 Volts |
| Model | 200382AFA |
| Mounting Type | Surface Mount |
| Number of Channels | 1 |
| Operating Temperature | 70 Degrees Celsius |
| Output Power | 900 Milliwatts |
| Voltage | 12 Volts, 24 Volts |

## Product Details

- **Voltage:** 3E+1 Volts (DC)
- **Manufacturer:** DROK
- **Maximum Supply Voltage:** 3E+1 Volts (DC)
- **Minimum Supply Voltage:** 3.3 Volts
- **Mounting Type:** Surface Mount

## Images

![Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator - Image 1](https://m.media-amazon.com/images/I/61kM9aOHkjL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Works great!
*by R***H on November 23, 2025*

This is an easy, cheap way to generate test frequencies. I'm using it to dial in audio frequencies for chiptune projects. It's very simple to use the included serial functionality. A few jumpers to a Raspberry Pi or TTL serial adapter and you're good to go.

### ⭐⭐⭐⭐⭐ Good product
*by B***N on August 22, 2025*

Easy to use and works as advertised. Just purchased a second one for another project.

### ⭐⭐⭐⭐⭐ Buen products
*by C***S on October 15, 2025*

Good satisfaction

## Frequently Bought Together

- DROK Signal Generator, DC 3.3-30V Function Generator 5-30mA LCD Display PWM Pulse Frequency Duty Cycle Rectangular Wave Square Wave Signal Generator
- DROK Frequency Generator, DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module
- HiLetgo 2pcs 3 Channel PWM Pulse Generator Signal Generator Module Adjustable Frequency Square Wave Rectangular Wave Signal Generator Duty Cycle with LCD Display 1Hz-150Khz

---

## 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.mx/products/97097141-signal-generator-dc-3-3-30v-function-generator-5-30ma](https://www.desertcart.mx/products/97097141-signal-generator-dc-3-3-30v-function-generator-5-30ma)

---

*Product available on Desertcart Mexico*
*Store origin: MX*
*Last updated: 2026-02-25*