Abstract: The invention is directed at a modular lighting, detection and control system (1) for an industrial construction or a vehicle service construction comprising an assembly of one or more suspension rails (3) and one or more system modules (7), wherein the suspension rails (3) are arranged for receiving the system modules (7), and the system modules (7) are arranged for mounting thereof on the suspension rails (3) for suspending therefrom, and wherein the system is arranged conveying electric signals to and/or from the modules (7) via the suspension rails (3), said electric signals including a power signal for powering the system modules (7), wherein the system further comprises a low voltage power supply unit for providing the power signal, the power signal being a low voltage electrical power signal, and wherein for conveying the electric signals the suspension rails (3) comprise one or more conductor sections (12,13,14,15), wherein the conductor sections (12,13,14,15) are formed of a conductive material subst