LCD display frequency and duty cycle, very clear, PWM output can be set to the frequency and duty cycle. Wide frequency range, high precision. Serial communication, TTL level. Used as a square wave signal generator, generate square wave signal for experimental development and use. Used to generate a square wave signal that controls the motor driver. Generate adjustable pulse for MCU use. Generate adjustable pulse, control the relevant circuit (PWM dimming speed and other applications). Serial control (single-chip TTL level communication). Fine workmanship and good performance. Stable and reliable, Easy to use, Long service life. Working voltage: 3.3 ~ 30V Frequency range: 1Hz ~ 150KHz Frequency accuracy: the accuracy in each range is about 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 °C color:Photo color Material:ABS Package Contents: 2 x 1 Channel PWM Pulse Signal Generator Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.