5V single power supply. Pin set up four kinds of pure sine wave output frequency: fixed frequency 50 hz pure sine wave; 60 hz fixed frequency pure sine wave; 0-100 hz pure sine wave frequency is adjustable; 0-400 hz pure sine wave frequency is adjustable.Unipolar and bipolar modulation. Comes with deadband control, pin set up 4 dead time: 300nS dead time; 500nS dead time ; 1.0uS dead time ; 1.5uS dead timeExternal 12MHz crystal oscillator. PWM carrier frequency 23.4KHz. Voltage, current, real time temperature feedback. Overvoltage, undervoltage, overcurrent and overheating protection. Soft-start mode pin setting the response time of 1S.Serial communication to set the output voltage, frequency and other parameters External.External serial port 128 * 32 LCD module 1602 display the voltage, frequency, temperature and electric current of the inverter and other information.Material: Plastic + Metalcolour: As shownPackage Contents:1 x DisplayOnly the above package content, other products are not included.Note: Light 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.