Check the listing for details. Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display. Condition: New. Listed at 4.19 USD. Product parameters: 1. Working voltage: 3.3~30V; 2. Frequency range: 1Hz~150KHz; 3. Frequency accuracy: The accuracy in each range is about 2%; 4. Signal load capacity: The output current can be around 5~30ma; 5. Output amplitude: PWM amplitude and supply voltage are equal; 6. Ambient temperature: -20~+70°C Application scope: 1. It is utilized as a square wave signal generator to generate square wave signals for experimental development and use; 2. Utilized to generate a square wave signal to control the motor driver; 3. Generate adjustable pulses for use by the MCU; 4. Generate adjustable pulses, control related circuits (PWM dimming speed control, etc. applications) Package Included: 1 x Signal Generator PWM Pulse Frequency Duty Cycle Adjustable Module LCD Display Instructions/schematic are NOT included. We don't provide technical assistance please make sure that you are familiar with the product before purchasing.