The item pictured is an SMS brand hybrid solar inverter, specifically appearing to be the 3.6kVA or 4.2kVA model based on available stock listings.
Function: Converts DC power from solar panels or batteries into AC power for household appliances.
Capacity: Available in models like 3.6kVA (24V) and 4.2kVA (24V).
Features: Often includes a built-in solar charge controller and supports backup power during outages.