100% brand new and high quality Features: Pin set 4 kinds 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 2 modulation: unipolar and bipolar modulation. With dead time control, pin set 4 dead time: 300nS dead time 500nS dead time 1.0uS dead time 1.5uS dead time External 12MHz crystal oscillator, and the PWM carrier frequency is 23.4KHz. Real-time processing of voltage, current and temperature feedback, and overvoltage, undervoltage, overcurrent, overheat protection. Pin setting soft start mode 1S response time. Serial communication sets output voltage, frequency and other parameters. External serial port 128x32 liquid crystal display module displays information such as voltage, frequency, temperature and current of the inverter. Widely application: uninterruptible power supply UPS system, digital generator system, single-phase motor speed controller, single-phase pure sine wave inverter, and so on. Specification: Material: Electronic component Size: app.6.5 x 3.3cm/2.56x 1.30in Color: As picture shown Quantity: 1 Pc Note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Pure Sine Wave Inverter