Three-channel PWM output with wide frequency range and independently adjustable duty cycle. Frequency is divided into four ranges with automatic switching: 1. XXX (no decimal point): 1 Hz step, range 1 Hz to 999 Hz 2. X.XX (decimal in hundredths place): 0.01 kHz step, range 1.00 kHz to 9.99 kHz 3. XX.X (decimal in tenths place): 0.1 kHz step, range 10.0 kHz to 99.9 kHz 4. XXX (no decimal point, interpreted as kHz): 1 kHz step, range 1 kHz to 150 kHz Example displays: “100” = 100 Hz, “1.01” = 1.01 kHz, “54.1” = 54.1 kHz, “1.2.4” = 124 Hz Duty cycle range: 0% to 100% (displayed as “A0%” when at 100%) All settings are automatically saved during power loss. Features: - 8-button interface for frequency and duty cycle adjustment - Short press adjusts by one unit; long press enables rapid adjustment - Settings auto-save upon change - Simultaneous press of three duty cycle buttons enables real-time multi-channel adjustment - LCD displays duty cycle of the last-pressed channel - Suitable for basic multi-channel duty cycle scanning Applications: 1. Square wave signal generator for experimental development 2. Square wave generation for motor driver control 3. Adjustable pulse generation for microcontroller (MCU) applications 4. PWM pulse generation for circuit control, including dimming and speed regulation Color: As shown in product photo Material: PCB + electronic components Package Includes: - 2 × 3-Channel PWM Pulse Generator Modules Note: Actual color may vary slightly due to lighting and display differences. Dimensional tolerance: ±1–3 cm.