Working voltage:33~30V;Frequency range:1Hz~150KHz;Frequency accuracy:accuracy is about 2% in each rangeSignal load capability:output current can be around 5~30ma;Output amplitude:PWM amplitude is equal to supply voltageAmbient temperature:-20~+70 CModule descriptionPWM output can set frequency and duty cycle respectivelyFrequency is divided into four areas: automatic switching:1XXX (without decimal point): the smallest unit is 1Hz, and the value range is 1Hz~999Hz;The minimum unit of 2XXX (decimal point in 100 bits) is 001Khz, and the value range is 100Khz~999Khz;3XXX (decimal point in ten places): the smallest unit is 01Khz; and the range is 100KHz~999KHz4XXX (decimal point in ten bits and 100 bits): the smallest unit is 1Khz; and the range is 1KHz~150KHzEg frequency display: 100 indicates PWM output 100Hz pulse;101 represents the pulse of PWM output 101K541 represents the pulse of PWM output 541KHz124 indicates the pulse of PWM output 124KHzDuty cycle:0~100%;All settings are saved by power downParameter settingModule has four independent keys, used to set the frequency and duty cycle, support short press (increase or decrease a unit) and long press (quickly increase or decrease), very simple, set the parameters automatically save, power loss is not lostScope of application:1is used as a square wave signal generator to generate square wave signals for experimental development2is used to generate square wave signals that control motor drives3generate adjustable pulse for MCU use;4generate adjustable pulses to control related circuits (PWM dimming and speed regulation applications)Size:78x42x26cm/307x165x102inch Note:Please allow 1-3mm error due to manual measurementpls make sure you do not mind before you bidDue to the difference between different monitors,the picture may not reflect the actual color of the itemThank you Package Includes:1x PWM Pulse Frequency Duty Cycle Adjustable Module