Check the listing for details. 2x Signal Generator PWM Module Pulse Frequency Adjustable 1Hz-150KHz Square Wave. Condition: New. Listed at 14.75 USD. Package Include: 2Pcs PWM Module (Optional) Main Features 1. Dual adjusting mode,0.1% duty cycle step in fine mode. 2. LCD screen clearly displays frequency and duty cycle. 3. Using encoder potentiometer to set the frequency and duty cycle separately. 4. With locking function to prevent wrong operation; 5. Wide frequency range, high precision; 6. Support for serial communication, TTL level. 7. Have ON/OFF button to control output signal output ON/OFF. 8. Integration panel cut-out / hole opening size: 76x40 mm Technical Parameters 1. Working voltage: 3.3 ~ 30V; 2. Frequency range: Normal Adjusting Mode:1Hz ~ 150KHz Fine Adjusting Mode:1Hz~15KHz 3. Frequency accuracy: the accuracy in each range is about 2%; 4. Signal load capacity: the output current can be about 5 ~ 30ma; 5. Output amplitude: PWM amplitude equals to the supply voltage; 6. Ambient temperature: -20 ~ +70 ℃. Typical Application: 1. Used as a square wave signal generator, generate square wave signal for experimental development and use; 2. Used to generate a square wave signal that controls the motor driver; 3. Output adjustable pulse for MCU use; 4. Output adjustable pulse, control the relevant circuit (PWM dimming speed and other applications). Adjusting Mode PWM output, set the frequency and duty cycle independently. Normal adjusting mode: Frequency range:1Hz~150KHz Duty cycle:000~100%, duty cycle adjusting step 1%; Fine adjusting mode: Frequency range:1Hz~15khz Duty cycle:00.0~100%, duty cycle adjusting step 0.1%; On Jul 31, 2024 at 09:43:34 PDT, seller added the following information: