Be sure to check us out Online at Smarter Home Products dot com! The small grid tie monitors the volume, frequency and phase of the home grid, then produce a pure sine wave that the frequency and phase are as same as the grid’s, and the volume is a bit higher than the grid’s, then according to the current controlled PWM, to control the output power to the grid. The small grid tie inverter just puts out power when the home grid is on. LCD display Function: On the LCD Panel of the inverter, there is one AC output socket, that will connect the AC output cable to home grid. The LCD display will display the grid AC voltage, current , active power and electric energy that conbined to the grid. 1. Electric parameters measurement function (voltage, current and active power, electric energy). 2. Running time function (record load cumulative working hours). 3. Backlight function. 4. Power down data save function (save the number of kWh, operation time). 5. Large screen LCD display (display voltage, current, power, active power, cumulative running time) Model SUN-1000G Normal AC Output Power 950W Maximum AC Output Power 1000W AC Output Voltage Range 110V/120V 90V ~ 130V AC Output Frequency Range 46Hz ~ 65Hz Total Harmonic Distortion(THD) <5% Power Factor 0.99 DC Input Voltage Range 22V~60V Peak Inverter Efficiency 92% Standby Power consumption <1W Output Current Waveform Pure Sine-wave MPPT Function Yes Over Current Protection Yes Over Temperature Protection Yes Reverse Polarity Protection Yes Island Protection Yes Stackable Yes