--- product_id: 528237161 title: "2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display" brand: "coliao" price: "€ 80.22" currency: EUR in_stock: true reviews_count: 4 category: "Coliao" url: https://www.desertcart.hr/products/528237161-2pcs-signal-generator-xy-kpwm-1-channel-1hz-150khz-pwm store_origin: HR region: Croatia --- # 3.3V-30V wide voltage range 1Hz-150kHz frequency span Locking knob prevents misoperation 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display **Brand:** coliao **Price:** € 80.22 **Availability:** ✅ In Stock ## Summary > 🔧 Master your signals with precision and ease — don’t get left behind! ## Quick Answers - **What is this?** 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display by coliao - **How much does it cost?** € 80.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/528237161-2pcs-signal-generator-xy-kpwm-1-channel-1hz-150khz-pwm) ## Best For - coliao enthusiasts ## Why This Product - Trusted coliao brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clear Visual Feedback:** Integrated LCD display keeps you informed in real-time. - • **Secure & Reliable Settings:** Lock function and auto-save ensure your parameters stay intact. - • **Effortless Frequency Tuning:** Rotary potentiometer with auto frequency range switching for rapid adjustments. - • **Precision at Your Fingertips:** Dual modes with 0.1% duty cycle accuracy for exact control. - • **Versatile Voltage Compatibility:** Operates seamlessly from 3.3V up to 30V DC for diverse projects. ## Overview The XY-KPWM Signal Generator is a compact, dual-mode PWM pulse generator supporting 1Hz to 150kHz frequency output with adjustable duty cycles from 0-100%. It operates on a broad DC voltage range (3.3V-30V) and outputs 5-30mA current, featuring a locking rotary knob, clear LCD display, and auto-save functionality. Ideal for motor control, MCU dimmers, and experimental development, this module delivers professional-grade signal generation in a user-friendly package. ## Description XY-KPWM Signal Generator 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V Function Generator 5-30mA with LCD Display and Rotary Switch The signal generator is a device that provides electrical signals at a variety offrequencies, square wave, and output levels. It is used as a signal source or excitation source for testing. There are 2 modes supported. Normal Mode: Frequency range 1Hz~150KHz, duty cycle range 0.00%-100%. duty cycle accuracy 1%. Exact Mode: Frequency range 1Hz~15KHz, duty cycle range 0.00%-100%, duty cycle accuracy 0.1%. Frequency Generator Parameter: Work Voltage: DC 3.3V-30V Frequency Accuracy: 2% Duty Cycle Range: 0. 00%-100% Output Current: About 5-30mA Output Amplitude: Same to input voltage Work Temperature: -104℉~185℉(-40℃~85℃) Work Humidity: 0%~95%RH Parameter Setting: This product adjusts the frequency and duty cycle by rotating the potentiometer. It can realize rapid adjustment according to the rotation speed. By default, adjust the duty cycle. Short press the adjustment frequency, long press for 2 seconds to lock, and long press for 5 seconds to switch the mode (normal mode/exact mode). The operation is simple. After setting, the parameters are automatically saved and will not be lost in power failure. The frequency is divided into 4 ranges and switched automatically. 1. XXX: minimum unit 1Hz, value range 1Hz~999Hz. 2. X.XX: minimum unit 0.01kHz, value range 1.00kHz~9.99kHz. 3. XX.X: minimum unit 0.1kHz; value range 10.0kHz~99.9kHz. 4. X.X.X: minimum unit 1kHz; value range 1kHz~150kHz. Review: Good speed control for 3 wire DC motors (with yellow extra wire). - Used to control a DC motor with a third yellow wire. LEVOIT LV-PUR131 HEPA filters have controls and 'time to change filter' logic and ultimately will stop functioning. The HEPA filter unit is good, and the motor is fine. The fix is to use this unit to control the motor directly bypassing all the built in wiring. Add 24v DC power supply(20w). Hook the power + from the power supply to the motor red, and the volt + on the unit. Hook the black - from the power supply to the motor black, the volt - and PWM - on the unit. Hook the yellow from the motor to the PMW + on the unit. Will control the motor from 1-100%. I set the frequency to 20KHz Review: Works as it should - using this to generate signal to control a PWM radiator fan, works perfectly well in my application, i have constant 12v running to it, ground is hooked up to a thermal switch which turns this unit on at certain temperature, which in turn sends signal to the fan ## Features - 【PWM Pulse Frequency Generator】 Work voltage range: DC 3.3V-30V; frequency range: 1Hz-150kHz/1Hz-15kHz; output current: 5-30mA. - 【XY-KPWM Signal Generator】PWM frequency supports 2 working modes. Normal mode with 1% duty cycle steps, . Precise mode with 0.1% duty cycle steps. High frequency range, high precision. - 【With Locking Function】Knob supports lock function to avoid misoperation. Can set frequency & duty cycle separately; duty cycle upper and lower bounds adjustable; support serial communication; all data auto-saved after setting. - 【Square Wave Signal Generator】Generating square wave signal for experimental development, generating square wave signal that controls the motor driver, and generating adjustable pulses for mcu dimmer; dimmer; speed governor, and so on. - 【Function Generator Module 】PWM signal generator use potential encoder to adjust, easy to use; shell protection and clear LCD display, PWM with switch. (Package contains 2pcs signal generator) ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B5RBBG2J | | Are batteries included? | No | | Brand | Coliao | | Customer Reviews | 4.2 4.2 out of 5 stars (15) | | Date First Available | 4 August 2022 | | Item Weight | 1 g | | Item part number | Coliao-Signal Generator XY-KPWM | | Manufacturer | Coliao | | Package Dimensions | 9.3 x 9.19 x 3.91 cm; 1 g | ## Images ![2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Image 1](https://m.media-amazon.com/images/I/7123PeGWoOL.jpg) ![2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Image 2](https://m.media-amazon.com/images/I/61Lj2jOADdL.jpg) ![2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Image 3](https://m.media-amazon.com/images/I/71hqtoY9yVL.jpg) ![2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Image 4](https://m.media-amazon.com/images/I/616TwJ376-L.jpg) ![2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Image 5](https://m.media-amazon.com/images/I/615VdsDH2CL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good speed control for 3 wire DC motors (with yellow extra wire). *by S***N on 13 July 2025* Used to control a DC motor with a third yellow wire. LEVOIT LV-PUR131 HEPA filters have controls and 'time to change filter' logic and ultimately will stop functioning. The HEPA filter unit is good, and the motor is fine. The fix is to use this unit to control the motor directly bypassing all the built in wiring. Add 24v DC power supply(20w). Hook the power + from the power supply to the motor red, and the volt + on the unit. Hook the black - from the power supply to the motor black, the volt - and PWM - on the unit. Hook the yellow from the motor to the PMW + on the unit. Will control the motor from 1-100%. I set the frequency to 20KHz ### ⭐⭐⭐⭐⭐ Works as it should *by M***S on 30 July 2023* using this to generate signal to control a PWM radiator fan, works perfectly well in my application, i have constant 12v running to it, ground is hooked up to a thermal switch which turns this unit on at certain temperature, which in turn sends signal to the fan ### ⭐⭐⭐⭐ Good *by S***Y on 21 January 2024* It's working like should. ## Frequently Bought Together - Coliao 2pcs Signal Generator XY-KPWM 1-Channel 1Hz-150KHz PWM Pulse Frequency Generator DC 3.3V-30V 5-30mA Function Generator Duty Cycle Square Wave Generator Adjustable Module LCD Display - Frequency Generator, DROK DC 3.3V-30V 5-30mA 1Hz-150kHz Adjustable Output PWM Pulse Duty Cycle Square Wave Function Signal Generator Module --- ## 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.hr/products/528237161-2pcs-signal-generator-xy-kpwm-1-channel-1hz-150khz-pwm](https://www.desertcart.hr/products/528237161-2pcs-signal-generator-xy-kpwm-1-channel-1hz-150khz-pwm) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-29*