SEMS-LC07A series centralised controller is a gateway device for street light centralised management based on IOT communication technology, aiming at solving the problems of large workload of street light inspection and operation and maintenance, non-intelligent management, and large energy consumption of street light in urban lighting. Built-in multi-channel digital input/output module and three-phase meter module can remotely and comprehensively control the energisation of various circuits in the distribution cabinet and measure the voltage, current and power information, so as to realise the full-coverage and unified management of the circuits; with excellent industrial design, it can still operate stably under the harsh environment, and can also switch on and off the lights according to the remotely preset strategy tasks even if the network fails, so as to realise the intelligent control of the lighting circuits and the unified monitoring and management.