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 display values: - “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 setting frequency and duty cycle - Short press adjusts in single steps; long press enables rapid adjustment - Settings save automatically - Simultaneous press of three duty cycle buttons allows real-time adjustment - LCD displays duty cycle of the last pressed channel - Real-time response suitable for multi-channel duty cycle scanning Applications: - Square wave signal generator for experimental development - Square wave generation for motor driver control - Adjustable pulse generation for microcontroller (MCU) applications - Adjustable pulse generation for circuit control, including PWM dimming and speed control Color: As shown in product image Material: PCB + electronic components Package includes: - 2 × 3-Channel PWM Pulse Generator Modules Note: Color may vary slightly due to lighting and screen settings. Dimensions may vary by ±1–3 cm.