LCD display, remote meter.  Optional remote meter to our gird tie inverter.  Automatic identify the inverter, and display relevant parameter data and system working status.  Screen data: ac voltage, current and frequency, generating capacity, power factor.  600W waterproof grid tie inverter, pure sine wave inverter.  DC20V-50V to AC110V or 220V,50Hz/60Hz auto.  Waterproof IP65.  Note: This inverter does not have a monitoring function.     System Function:  ◆ 6-grade power search---In overcast weather, the PV Panel’s output current is extremely tiny, then the inverter will automatically open the 6-grade power search function, and keep outputting efficiently and steadily during the low power.  ◆ Wide voltage input(22-50VDC)--- 1. DC voltage input:22~50VDC; 2. Second level power variable voltage conversion.  ◆ High-frequency two-way and one-way grid function--- 1. High frequency direct modulation, AC half wave synthesis;  2. Two-way grid means: Load consume directly. And can reverse AC current transmission.  ◆ Kinds of frequency output function--- 1. It can apply to 50Hz and 60Hz frequency of AC; 2. Frequency range: 45Hz ~ 64Hz;  ◆Directly connected to the solar panels (do not need to connect the battery).  ◆ AC 0 angle with high precision auto-detection--- High-precision analyzing the AC phase angle.The phase shift rate is less than 1%, thus achieving high precision with phase modulation AC output together.1. AC phase shift: < 1%; 2. Over-zero protection: 0.2 VAC; 3. AC switching: 50Hz / 60Hz.  ◆ Synchronous High-frequency Modulation:  1. Modulation synthesis: half-wave and full-bridge modulation synthesis (100Hz / 120Hz);  2. Synthetic way: MOSFET full-bridge; 3. High frequency: 50KHz.  ◆ Pure Sine Wave Output---Use SPWM directly to make pure sine wave output.  1. Output waveform: Adopt complementary PWM to push-pull pure sine wave;  2. Generate means: enhancement-mode SPWM.  ◆ Power Automatically Locked (APL)---  automatically powers locked in maximum power point made output more stable.  ◆ Constant Current, Constant Power---  constant current and output power, without any overload, over-current phenomenon.  ◆ Exactly and timely automatic Island Effect Protection.  ◆ High-Frequency High Conversion Rate---  Adapt high frequency converter, the output more efficient.  ◆ Maximum Power Point Tracking (MPPT)--- high-precision (MPPT) operation power, automatic and immediate adjust the solar panels output power at the maximum output point,made the inverter discharge to power grid with the highest efficiency.  ◆ Stack using--- Such as: 4 micro inverter of 260W stacking can achieve 1040W. the number of the stacking is unlimited.  ◆ DC input---Input voltage range: 22V to 50V,PV Panel: Recommend using the power more than 30W and the standard voltage of 36V PV panels.Suggestion making the PV in parallel.  ◆ AC output---220VAC: 180V - 262V, 50HZ; 110V AC: 80V - 160V,60HZ.     Package:  1.One user manual;  2.One 600W inverter;  3.One AC Cable;  4.If you choose include with LCD meter,the US plug will include this,if not,then do not include the LCD.