The PWM transfer voltage module LC-LM358-PWM2V converts the PWM digital signals into 0 to 10V analog signals. It can be used as signal interface switching for PLC or other industrial control boards. The output voltage is regulated by adjusting the duty ratio of the PWM. The modules are small in size and easy to use in different places. Features: 1. MCU embedded technology 2. Easy to operate, fine-tuned by potentiometer 3. Select the PWM signal input level range through short-circuit 4. The module is smaller, easy to carry and use Parameter: 1. Work Voltage:DC 12V-30V; (> 100MA) 2. PWM Receiver Frequency:1KHZ-3KHZ 3. PWM signal input level range: The peak of 4.5V to 10V level. The short cap install in ‘5V'. This level is used for normal controller or 5V MCU The peak of 12V to 24V level, so inserted in 24V. The short cap install in ‘24V'. This level is used for normal PLC controller 4. Conversion range:0%-100% PWM to 0-10V 5. Allowable error:5% Hardware Interface: VCC DC 12V-30V GND Ground PWM Positive of PWM input signal GND Negative of input signal VOUT Output Voltage 0-10V GND Output Voltage Ground 5. Operation instructions: After power on, without an input signal, the output is 0V, so only input can output. The first time when the power is on, it is best to do a calibration debugging: Input a 50% duty ratio signal to PWM/GND and adjust the relative amplitude short cap. The frequency is 1KHZ-3KHZ, Measured VOUT and GND with a multimeter and it will display 5V. Adjust the potentiometer to make sure displays 5.00V on the multimeter. This will calibrate your pulse signal to this module. When the frequency changes, the correspondences may be offset and need to be re-calibrated. The output voltage can be adjusted by adjusting the duty ratio. The accuracy can be controlled by adjusting the potentiometer.