Features: 4 pin set of 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 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 Serial LCD Module 1602 displays the inverter, voltage, 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: 5 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.