PL5 fits into the EN 60598-2-3 NEMA or Zhaga Book 18 socket of any modern LED luminaire, converting a dumb street light into a fully managed IoT node in 30 seconds without an electrician. Telensa RPMA radio achieves 3-5 km urban range on 900 MHz sub-GHz, enabling single-gateway coverage of a whole city district from the top of a high-rise. Demand-responsive dimming profiles reduce energy consumption by 40-70% versus fixed-schedule control by matching light levels to pedestrian and vehicle activity detected by connected sensors. Central Management System dashboard monitors every light’s energy consumption, burning hours, and maintenance fault in real time, generating work orders automatically for burnt-out lamps. Over 3 million PL5 units deployed in 50 countries.