Usage Steps: 1. Connect to power supply 2. Press the rotary switch for 10 seconds to switch between normal mode and precise mode 3. Short press the rotary switch to set the frequency and change the value by rotating the switch 4. Press the rotary switch for 2 seconds to set the working voltage 5. Press and hold for 5 seconds to lock set parameters 6. Test 7. Press the 'ON or OFF' button to turn the PWM output on or off 8. Remove power and connect the load to use the module. The XY-KPWM signal generator is a device that provides electrical signals at various frequencies, square waves, and output levels. It is used as a signal source or excitation source for testing. It is widely used in production practice and technology. 1. With outer casing 2. High-definition LCD display 3. Supports UART 4. Supports frequency adjustment 5. Supports working voltage adjustment 6. High precision detection 7. Supports power-off memory function 8. 1-channel PWM output 9. Dual working mode 10. Knob supports lock function to avoid incorrect operation 11. Supports enabled output Parameters: 1. Product Name: XY-KPWM PWM Signal Generator 2. Model: XY-KPWM 3. Working Voltage: DC 3.3V-30V 4. Frequency Range (Normal Mode): 1Hz-150KHz 5. Frequency Range (Precise Mode): 1Hz-15KHz 6. Frequency Accuracy: 2 percent 7. Working Voltage Accuracy: 1 percent in normal mode 8. Working Voltage Accuracy: 0.1 percent in precise mode 9. Working Voltage Range: 0.00 percent -100 percent 10. Output Current: About 5-30mA 11. Output Amplitude: Same as input voltage 12. Working Temperature: -40 Celsius-85 Celsius 13. Working Humidity: 0 percent -95 percent RH Application: 1. Square wave signal generator, generates square wave signal for experimental development 2. Used to generate a square wave signal that controls the motor driver 3. Generate adjustable pulses for use by MCU 4. Dimmer 5. Speed controller Color: black Material: plastic Size: 71x39mm Package Contents: 1xSignal Generator Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowable measurement error is 1-3cm.