5V single supplyPin Set 4 pure sine wave output frequency: 50Hz pure sine wave 60Hz fixed frequency pure sine wave 0-100Hz fixed frequency pure sine wave frequency adjustable sine wave frequency adjustable 0-400Hzunipolar and bipolar modulationwith a dead zone, 4 pin set dead time: 300nS dead time 500nS dead time 1.0uS dead time 1.5uS dead timeexternal 12MHz crystal oscillatorThe frequency of 23.4KHz * PWMtemperature, voltage and current feedback real-time processingovervoltage and undervoltage, overcurrent, overheating protection functionthe response time of soft pin setting mode 1Sthe serial communication settings of output voltage and frequency parametersexternal serial port 128*32 liquid crystal display module shows the inverter voltage, frequency, temperature and current information, etc.LCD type: 1 LCD; 2 common 128*32 LCD (liquid crystal, an additional purchase).The driver board:Undervoltage protection + A:128*32 LCDUndervoltage protection + B:Special LCDNo undervoltage protection + C:128*32 LCD No undervoltage protection + D:Special LCDEG8010 pure sine wave inverter chipapplication areassingle phase pure sine wave inverterphotovoltaic inverterwind inverteruninterrupted supply UPS systemdigital generator systemif supplysingle phase motor speed regulation controllersingle phase invertersine wave light regulatorsine wave voltage regulatorsine wave generatorColour:blueMaterial:plasticPackage Contents:2 x Pure Sine Wave Driver BoardOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.