Features: LCD display frequency and duty cycle, very clear, PWM output can be set to frequency and duty cycle. Wide ranges of frequencies, high precision. Used as a square wave signal generator, generates a square wave signal for experimental development and use. Used to generate a square wave signal that controls It is the motor driver. Generates an adjustable pulse for MCU use. Generates an adjustable pulse, controls the relevant circuit (PWM dimming speed and other applications). Serial control (single chip TTL level communication). Features: Operating voltage:?3.3 ~ 30?V< br/> Frequency ranges?: 1?Hz ~ 150?KHz Frequency accuracy: 2% Signal load capacity?: output current can be about 5 to 30?mA Output amplitude?: PWM amplitude equal to the supply voltage Temperature Ambient:?-20~+70?Package size: 75*40*20mm/2.95*1.57*0.79in Package weight?:?37?g?/?1.3 ounces Package list?: 1 * signal generator module