XVM tower lights supplied pre-assembled are equipped with wires marked with a wiring instructions label. Each signaling unit of the tower light is identified by a different wire color. Electrical connections between each unit are made automatically. Buzzer (80 db) integrated in the base unit Light sources fully interchangeable: incandescent bulbs, LED with steady or flashing light Modular units stack vertically Indicator banks supplied complete (pre-assembled and pre-cabled): Mounted on support tube with a bracket or on support tube with a plastic fixing plate (length 100, 250 or 400 mm). Signaling color: R: Red,O: Orange,G: Green In the references,the colors are listed in the same order as the mounting of illuminated units (from top to bottom) Continuous or intermittent tone Sound level at1m:0dB to 85dB