these modules are designed to offer flexibility in electrical installations, allowing for easy organization and customization based on the needs of the application. Module 18 could serve a variety of functions, such as housing specialized switches, sockets, circuit breakers, control modules, or other electrical components required for the installation. For precise information on Havells GI Box Module 18 and its intended purpose, it's best to refer to the latest product documentation provided by Havells or consult with an electrical expert familiar with their product range.