--- product_id: 465345176 title: "DROK Frequency Generator, DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module" brand: "drok" price: "$50.72" currency: USD in_stock: false reviews_count: 5 url: https://www.desertcart.us/products/465345176-drok-frequency-generator-dc-3-3v-30v-5-30ma-1hz store_origin: US region: United States of America --- # 1Hz-150kHz Frequency Range 2% Frequency Accuracy 3.3V-30V Voltage Range DROK Frequency Generator, DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module **Brand:** drok **Price:** $50.72 **Availability:** ❌ Out of Stock ## Summary > πŸ”Š Unleash Your Creativity with Precision Control! ## Quick Answers - **What is this?** DROK Frequency Generator, 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?** $50.72 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/465345176-drok-frequency-generator-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 - β€’ **βš™οΈ Dual Modes:** Choose between normal and accurate modes for tailored performance. - β€’ **πŸ”’ Secure Settings:** Lock function ensures your configurations stay intact. - β€’ **πŸ“Ί Clear LCD Display:** Easily monitor frequency and duty cycle values at a glance. - β€’ **πŸ”§ Versatile Applications:** Perfect for experimental development, motor driving, and PWM dimming. - β€’ **πŸ’Ύ Auto-Save Functionality:** All settings are automatically saved, so you can pick up right where you left off. ## Overview The DROK Frequency Generator is a highly versatile signal generator module that operates within a voltage range of 3.3V to 30V and offers a frequency range of 1Hz to 150kHz. With a compact design and a weight of just 10g, it features a clear LCD display for easy monitoring, dual operational modes, and a secure lock function to maintain your settings. Ideal for various applications, this module is perfect for professionals looking to enhance their projects with precise control. ## Description DROK Frequency Generator, 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 | |---------------|-------| | Manufacturer | DROK | | Part number | 200393 | | Item Weight | 10 g | | Package Dimensions | 8.8 x 8 x 4.5 cm; 10 g | | Item model number | 200393 | | Batteries included? | No | | Batteries Required? | No | ## Product Details - **Brand:** DROK - **Color:** Black - **Display Type:** LCD - **Item Weight:** 0.01 Kilograms - **Voltage:** 30 Volts (DC) ## Images ![DROK Frequency Generator, 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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Worth it *by A***Y on Reviewed in the United States on 4 February 2024* Fixed my problem! Works good for its price ### ⭐⭐⭐⭐⭐ Great product for the price! *by C***N on Reviewed in Canada on 21 June 2023* Worked as described, set to 128Hz and produced 127Hz with a 5V feed wire. Used on electronically controlled alternator, works perfect for setting voltage via duty cycle. 10/10 would buy again. ### ⭐⭐⭐⭐⭐ Elementos electrΓ³nicos ΓΊtiles *by H***N on Reviewed in Mexico on 10 May 2023* El vendedor cumplio lo comprometido en su oferta y el elemento electronico esta funcionando correctamente, de igual forma fue entregado muy en tiempo. ## 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 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/465345176-drok-frequency-generator-dc-3-3v-30v-5-30ma-1hz](https://www.desertcart.us/products/465345176-drok-frequency-generator-dc-3-3v-30v-5-30ma-1hz) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-04-23*