DDX1-ZN/Q型智能铁路信号点灯单元用于站内/区间信号机，是铁路行车信号的灯丝自动转换装置，是保证铁路行车安全的重要信号部件，是集交流点灯、灯丝转换、故障定位报警为一体的多功能智能点灯单元。

DDX1-ZN/Q intelligent railway signal lighting unit used in the station/interval annunciator is an automatic filament conversion device for railway traffic signals. It is an important signal component for ensuring the safety of railway traffic. It is a multifunctional smart lighting unit integrating AC lighting, filament conversion and fault location alarm.