Module Features: 1. Dual-mode operation: Normal mode (1 Hz–150 kHz frequency range, 1%–99% duty cycle); High-precision mode (1 Hz–15 kHz frequency range, 0.0%–0.1% duty cycle). Lock function prevents accidental operation. 2. Clear LCD display showing frequency and duty cycle. Adjustment via rotary encoder potentiometer for intuitive and precise control. PWM output frequency and duty cycle can be set independently. 3. PWM output module with independent adjustment of frequency and duty ratio. 4. Adjustable upper and lower limits for duty cycle. One-key ON/OFF switch for PWM output. 5. Wide frequency range with high resolution and accuracy. Supports serial communication. Model: XY- Normal Mode: Frequency range 1 Hz–150 kHz; Duty cycle range 1%–99%. High-Precision Mode: Frequency range 1 Hz–15 kHz; Duty cycle range 0.0%–0.1%. Frequency Display Format: - Range 1: 1 Hz–999 Hz (unit: 1 Hz, no decimal point) - Range 2: 1.00 kHz–9.99 kHz (unit: 0.01 kHz, decimal point shown) - Range 3: 10.0 kHz–99.9 kHz (unit: 0.1 kHz, decimal point shown) - Range 4: 100 kHz–150 kHz (unit: 1 kHz, decimal point in hundreds place) Example: - Display “100” = 100 Hz PWM output - Display “54.1” = 54.1 kHz PWM output - Display “124” = 124 kHz PWM output All settings are saved automatically upon power-off. Specifications: Operating Voltage: 3.3 V–30 V DC Frequency Range: - Normal Mode: 1 Hz–150 kHz - High-Precision Mode: 1 Hz–15 kHz Frequency Accuracy: Approx. ±2% across all ranges Output Current Capability: 5 mA–30 mA Output Amplitude: Equal to supply voltage Operating Temperature: –20°C to +70°C Housing Material: Plastic Color: Gray/Black Package Includes: 1 × Signal Generator Module Note: Due to lighting conditions and screen variations, actual product color may differ slightly from images. Measurement tolerance: ±1–3 cm.