*Blue round socket (left): An IEC 60309 industrial socket, typically used for 230 V single-phase power. The blue hinged cover protects it from dust and water when not in use.
*White weatherproof switch (right): A weatherproof switch or switched socket used to control the power supply.
*Blue enclosure (back): A robust, weather-resistant housing (often IP44, IP55, or IP66 rated) for outdoor or industrial environments.