---
product_id: 356685058
title: "Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module"
brand: "drok"
price: "€ 52.50"
currency: EUR
in_stock: true
url: https://www.desertcart.de/products/356685058-frequency-generator-drok-dc-3-3v-30v-5-30ma-1hz
store_origin: DE
region: Germany
---

# 3.3V-30V wide voltage range Auto-save settings memory 1Hz-150kHz frequency span Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module

**Brand:** drok
**Price:** € 52.50
**Availability:** ✅ In Stock

## Summary

> ⚙️ Unlock precision pulses and power your projects like a pro!

## Quick Answers

- **What is this?** Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module by drok
- **How much does it cost?** € 52.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.de](https://www.desertcart.de/products/356685058-frequency-generator-drok-dc-3-3v-30v-5-30ma-1hz)

## 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

- • **Lock & Load Confidence:** Lock function prevents accidental changes—stay in control, always.
- • **Smart Auto-Save Memory:** All your custom settings are saved automatically, so you never lose your perfect setup.
- • **Dynamic Frequency Range:** Generates signals from 1Hz to a blazing 150kHz, covering all experimental bases.
- • **Precision at Your Fingertips:** Dual modes with up to 0.1% duty cycle step for ultra-accurate signal tuning.
- • **Versatile Voltage Compatibility:** Operates seamlessly from 3.3V to 30V to fit diverse project needs.

## Overview

The DROK Frequency Generator is a compact, high-performance PWM pulse signal module designed for professionals and hobbyists alike. Operating across a broad 3.3V to 30V range, it delivers adjustable square wave outputs from 1Hz up to 150kHz with 2% frequency accuracy. Featuring dual modes for normal and ultra-accurate control, an intuitive LCD display, lock function to prevent misoperation, and automatic data saving, it’s ideal for experimental development, motor drivers, MCU pulse generation, PWM dimming, and speed regulation applications.

## Description

Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module

## Features

- PARAMETER --- working voltage range 3.3V-30V; frequency range 1Hz-150kHz/1Hz-15kHz; output current 5-30mA; frequency accuracy 2% in each range.
- APPLICATION --- as square wave signal generator for experimental development; as square wave signal generator for motor driver; as adjustable pulse generator for MCU; as adjustable pulse generator for PWM dimming, speed regulating, etc.
- DISPLAY--- clear LCD displays frequency & duty ratio value.
- MODE --- 2 modes, normal mode & accurate mode.
- FEATURE --- with lock function; PWM output, can set frequency & duty cycle separately; duty cycle upper and lower bounds adjustable; support serial communication; all data auto saved after setting.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | DROK |
| Manufacturer | DROK |
| Country of Origin | USA |
| Model number | 200393 |
| Number of Memory Sticks | 1 |
| Item Weight | 10 g |
| Package Dimensions | 10.21 x 9.3 x 3.99 cm; 10 g |
| Item model number | 200393 |
| Are batteries included? | No |

## Product Details

- **Color:** Black
- **Brand:** DROK
- **Voltage:** 30 Volts (DC)
- **Item Weight:** 0.01 Kilograms
- **Display Type:** LCD

## Images

![Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module - Image 1](https://m.media-amazon.com/images/I/61XoNzzshfL.jpg)

## Questions & Answers

**Q: Will this work as a 7.83 hz (schumann resonance) generator to infuence ambient room frequency....or does this have totally unrelated applications?**
A: First off I know nothing about the application that you are interested in using this for.
That being said this unit doesn't have the ability to dial down to .83 hz only whole numbers. The output is DC square wave.
Hope this helps.

**Q: how do you keep the control on frequency instead of keeping defaulting to duty cycle setting?  It is very difficult to control frequency due to this.**
A: This is not the pulse generator you are looking for. This is a fixed frequency, varible width PEM generator.

I think what you are looking for is something like this:"Radio Control Servo ESC Consistency Digital Tester 1-4S for Speed Controller"
or "Electronic Speed Controller Servo Tester ESC for RC Airplane Helicopters"

Both on EBAA

**Q: how can I connect this device to speakers and what do I need to do so?**
A: this is a frequency generator not a radio.  even if you could all you would get is noise.

**Q: Will this work for a diy "chaterbox" which would push no more than 20-24v in a pulse format every 3-5 seconds.  with 2 9v batteries as input?**
A: As long as you do not have a load that draws more than 25ma

## Frequently Bought Together

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

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*Product available on Desertcart Germany*
*Store origin: DE*
*Last updated: 2026-02-10*