Enhance your electronic projects with this Pulse Duty Cycle Adjustable Module, featuring the reliable NE555 main chip for precise and versatile waveform control. Designed to operate within a 5V-15V DC input range, this module offers adjustable output frequency and duty cycle, making it ideal for applications requiring customizable pulse signals. Key Features: · Adjustable Duty Cycle and Frequency: Equipped with 4 jumpers and 2 variable resistors, users can easily fine-tune the output waveform to achieve the ideal pulse wave, with working cycle adjustments directly influencing frequency for seamless control. · Wide Frequency Range: The module supports multiple frequency ranges determined by capacitance values, allowing continuous adjustment from as low as 1Hz up to 200kHz to suit various electronic applications. · LED Output Indicator: An integrated LED clearly displays output status—steady light for low-level output, off for high-level output, and flashing for low-frequency signals—providing intuitive visual feedback during operation. · Reliable Output Performance: Delivers output amplitudes from 4.2V Vpp to 11.4V Vpp depending on input voltage, with maximum output currents of approximately 15mA at 5V and 35mA at 12V power supply, ensuring stable and consistent pulse generation. · Compact and Versatile: This module’s small size and electronic component construction make it suitable for integration into a variety of DIY electronics, signal processing, and timing circuit projects. Specifications: · Item Type: Pulse Duty Cycle Adjustable Module · Main Chip: NE555 · Input Voltage: 5V-15V DC · Input Current: ≥100mA · Output Amplitude: 4.2V Vpp to 11.4V Vpp (varies with input voltage) · Maximum Output Current: ≥15mA (5V input), ≥35mA (12V input) · Output Frequency Range:  - Low Frequency: 1Hz ~ 50Hz (C=0.001µF)  - Medium Frequency: 50Hz ~ 1kHz (C=0.01µF)  - Medium-High Frequency: 1kHz ~ 10kHz (C=1µF)  - High Frequency: 10kHz ~ 200kHz (C=100µF) · Frequency Adjustment Formula: T=0.7(RA+2RB)×C (RA and RB adjustable 0-10kΩ) · Material: Electronic Components Package Includes: · 1 x Pulse Duty Cycle Adjustable Module This Pulse Duty Cycle Adjustable Module provides a flexible and efficient solution for generating adjustable pulse signals, making it an essential component for hobbyists and professionals working on timing, modulation, and waveform generation projects.