PWM mode 1 - frequency (continuous), duty cycle, number of pulses adjustable; mode 2 - positive width time, negative width time, delay time, and the number of pulses are adjustable.With and stop button, it can control the output and stop of the signalWide voltage input 3.3-30V, with anti-reverse connection protection, 5.08mm terminal wiringWorking voltage: 3.3~30V, with anti-reverse connection protectionFrequency range: 1Hz~150KHz, the accuracy is about 2%Duty cycle range: 0-100%, 1% stepNumber of pulses: 1-9999, or (display '-' for )Delay output time: 0.000s-9999s, the minimum can be set to 1msPositive and negative width length: 0.000s-9999s, the minimum can be set to 1msSignal carrying capacity: less than 30mAOutput signal amplitude: the amplitude is to the supply voltageProduct weight: 18gsize:60x32mmMaterial:ABS+Metalcolour:bluePackage Contents:1 * Signal GeneratorOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.