Features: 1.IP65 waterproof design (installed at the bottom of solar panel) 2. AC data monitoring screen. 3. Built-in High Performance Maximum Power Point Tracking Function (MPPT) 4.Suitable for 4X250W-300W 36V solar panel (Vmp30-39V; Voc36-50V) 5. Aluminum alloy material. Better heat dissipation. 6.Support single-phase or three-phase connection. 7.Simple wiring. 8. High precision phase detection; Overvoltage and undervoltage protection; over- and under-frequency protection; Island protection. Parameters: Model: WVC-1200W Rated voltage: 220 V PV recommend: 4*250~300W Recommended PV (Voc): 34~50 V DC MPPT Tracking Voltage: 2840 V DC Maximum input current: 52A Rated output current: 5A Maximum units per branch: 5 PIECES Frequency: Automatic switch 50/60Hz Ambient temperature: 40to +65 Dimensions: 370 mm 300 mm 41.6 mm Weight: 4kg Cooling: Self-cooling Certificate: CE User note: Vmp (a solar module) must be in MPPT tracking range to ensure good output efficiency ONLY use a solar panel connected to this unit. This unit is an ON-GRID micro inverter. For it to work properly, it must be properly connected to the mains and the mains must work properly. When the power grid stops working, it also stops generating. DO NOT exceed the voltage of the PV modules above the maximum input voltage of the Solar Grid Tie Inverter. (Vmp28V Vocal50V) DO NOT exceed the power of the PV modules above the maximum input power of the Grid Tie solar inverter. (4X300W) The positive and negative poles of the solar module cannot be interchanged. If you extend the cable of the solar module. You have to be careful about this problem. Install protected from direct sunlight and rain (ventilated, dry, cool). On the heating problem of the inverter: This is a normal phenomenon. All electronic devices generate heat during operation. The inverter uses aluminum alloy material. Metal conducts heat better. The inverter also has over-temperature protection when the temperature is too high. Then the inverter automatically reduces the working power efficiency. Or stop working. Restart after cooling. It is recommended to install the inverter in a ventilated, dry and cool place.