A The parameters have been set when the product is produced, and no need to change manually.Monitoring: View the LCD screen of the device directly, or can add the WIFI module to connect to the APP.
According the electricity comsuption to determine the power and number of solar panels and Batteries, or choose the standard configuration from our EU warehouse.
A Within the shelf life, if the problem is with the product itself, it will be replaced free of charge. Outside the shelf life, it will be sold to the customer at a 20% discount on the original price.