Signal Generator Module Adjustable PWM Pulse Frequency Duty Cycle Square Waves Signal Generator Black Features: LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle. Wide frequency ranges, high precision. Used as a square waves signal generator, generate square waves signal for experimental development and use. Used to generate a square waves signal that controls the motor driver. Generates adjustable pulse for MCU use. Generates adjustable pulse, control the relevant circuit (PWM dimming speed and other applications). Serial control (single-chip TTL level communication). Specifications: Working voltage: 3.3~30V Frequency ranges: 1Hz~150KHz Frequency accuracy: 2% Signal load capacity: the output current can be about 5~30mA Output amplitude: PWM amplitude equal to the supply-voltage Ambient temperature: -20~+70 Package size: 75 * 40 * 20mm / 2.95 * 1.57 * 0.79in Packge weight: 37g / 1.3ounces Package List: 1 * Signal Generator Module