LED brightness adjustment, frequency, duty can be adjusted. Motor speed adjustment, frequency and duty can be adjusted. Drive the solenoid valve to pull and release, automatic , delay output, number (or loop) can be set. Control equipment to turn , do switch fatigue test, voltage and other tests to verify the reliability of customer equipment. Delay load, delay time can be set, after the delay, it will be turned on or intermittently. 3.2 PWM mode (display has "%" for PWM mode) The default mode is PWM mode, FREQ+ and FREQ-key set frequency, DUTY+ and DUTY-button set duty ; short press STOP button control signal output or stop, stop output is 0, the screen displays "OUT" as There is output, otherwise it stops output; the default frequency is 1KHZ and the duty is 50%. If you to switch to mode, long press the SET button (more than 6 seconds), do not release, you will see the screen change, "%" disappears, it is mode. Colour: Black. material: plastic 1. : 1.1 can directly drive LED, motor, solenoid valve and other loads 1.2 Two modes can be : PWM mode - frequency (continuous), duty . Note that the number of pulses cannot be set in this mode, and the is always emitted. mode - width time, negative width time, power-on delay time, and number of pulses are adjustable. 1.3 With and stop button, can control the output and stop of the signal 1.4 Wide voltage input 3.3-30V, 5.08mm terminal wiring 2. Technical parameters: 2.1 Working voltage: 3.3~30V (note that the and negative poles should not be reversed, otherwise it may burn out) 2.2 Frequency range: 1Hz~150KHz, the accuracy is about 2%. Motor speed control generally chooses 20KHZ 2.3 duty range: 0-100%, 1% stepping 2.4 number of pulses: 1-9999, or (display '----' stands for ) 2.5 delay output time: 0.000s-9999s, the minimum can be set 1ms 2.6 and negative width length: 0.000s-9999s, the minimum can be set 1ms 2.7 output load capacity: less than 8A (MOS switch tube) 2.8 Output amplitude: The amplitude is to the supply voltage (OUT+ is directly connected to the V+ module) 2.9 Product size: 79mm*43mm*30mm 2.10 Product Weight: 42g 3. Module description: 3.1 button operation instructions Package Contents: 1*-PP2K generator Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.