Features: 4 pin pure sine wave output frequency: 50Hz pure sine wave of fixed frequency of 60Hz pure sine wave of fixed frequency 0-100Hz pure sine wave frequency adjustable 0-400Hz pure sine wave frequency adjustable Unipolar and bipolar modulation Comes with deadband control, pin 4 dead time: 300nS dead time 500nS dead time 1.0uS dead time 1.5uS dead time, External 12MHz crystal oscillator PWM frequency 23.4KHz. , current, real time temperature feedback, Overvoltage, undervoltage, overcurrent and overheating protection Soft- mode pin setting the response time of 1S Serial communication to set the output , frequency and other parameters ,External Serial LCD Module 1602 displays the inverter, , frequency, temperature and current information Applications: Single phase pure sine wave inverter PV Inverter Wind power inverter Uninterruptible Power Supply UPS System Digital generator system IF power Single-phase motor speed controller Single-phase inverter Sine wave dimmer Sine wave regulator Sine wave generator Material: plastic colour: blue Package Contents: 1 x Inverter Driver Board 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.