"MPPT power inverter range 24-40V Machine overheating protection If the product temperature is around 75-80 ° C, overheating protection is provided. The power is halved, and when the temperature returns to normal, full power is released again. Please place it in a cool and ventilated place VMP (solar panel) should be within the MPPT range to ensure good power efficiency Recommended solar panel voltage: VMP: 30-39 V; VOC: 38-46 V. These products are susceptible to fuse damage. If this issue occurs, please contact us to obtain spare parts. If this troubles you, we suggest that you do not purchase Die Leistung des Solarpanels DARF 260W-700W nicht ü berschreiten [Bitte verwenden sie das ger ä t innerhalb des von uns empfohlenen spannungsbereichs]. Using uncontrolled voltage can cause machine damage Micro Grid Tie inverter does not work with battery. If there are any issues with the product, please contact us.. We will resolve it for you as soon as possible As this product is prone to fuse damage, if you need to replace parts, please contact us. If this troubles you, we suggest you not to purchase!!!"