The most critical factor is matching the Model Number or the Part Number (e.g., AKB series) located on the back of the original remote. Since LG uses different Infrared (IR) codes for various regions and series (Split, Window, Portable, or Multi-V), you must verify if the remote is a Universal LG replacement or a Dedicated model. For B2B buyers, it is recommended to request a Compatibility List from the supplier to ensure the remote supports specific functions like Jet Cool, Energy Display, or Ionizer control.