Features: 4 pin set of pure sine wave output frequency: 50Hz pure sine wave fixed frequency, 60Hz pure sine wave 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, 500nS, 1.0uS, 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 with pin setting, response time of 1S. Serial communication to set output voltage, frequency and other parameters. External serial LCD module 1602 displays 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 Color: 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 picture to be slightly different from the real thing. Measurement allowed error is +/- 1-3cm.