Module stressed: 1. The dual mode, the duty cycle is 0.1 percent good model The lock function, prevent wrong operation 2. The frequency and duty cycle, LCD LCD is very clear, using encoder potentiometer to adjust, very convenient PWM output frequency and duty cycle can be set separately 3. The module is described: PWM output, frequency and duty ratio can be separately 4. The duty cycle of the upper and lower limits can be set up KPWM switch, and PWM output can be turned on and off a key 5. The wide frequency range and high precision Serial communication is possible model: XY-KPWM Normal mode: Frequency range 1 hz-000-150 KHZ duty cycle, duty ratio 1 percent Good mode: Duty cycle 1 hz to 15 KHZ range of 00.0-0.1 percent duty cycle Is divided into four frequency range, automatic switch: 1. XXX (no decimal point): a small unit is 1 hz, value range is 1 hz - 999 hz. 2. X. (decimal point in ), small unit 0.01 KHZ, and the value range is 1.00 KHZ to 9.99 KHZ. 3. .Decimal point X (10): a small unit 0.1 KHZ Values range from 10.0 KHZ to 99.9 KHZ 4. 7.0.x.x.X (decimal point in dozens, hundreds of): a small unit 1 KHZ Range of values is 1 KHZ to 150 KHZ Such as frequency display: 100 means that the PWM output 100 hz pulse 54.1 54.1 KHZ PWM output pulse means 1 means that the PWM output 124 KHZ pulses All save the parameter set to turn it off. parameters: Working voltage: 3.3 - 30 v. The frequency range: 1 hz - 150 KHZ normal mode A good pattern 1 hz to 15 KHZ The frequency accuracy: precision in every range of about 2 percent Load capacity: The signal can be about 5 - 30 ma output current The output amplitude, pulse width modulation amplitude is equal to the power supply voltage The environment temperature: - 20 - and 70 . Material: plastic colour: grey black Package Contents: 1 x 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.