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Typical Single Lane Installation
Figure 1. Typical Installation
Material Required (not supplied)
• 3/4–inch conduit (metal or plastic) – 2 pieces 4–5 feet in length
• conduit clamps
• assortment of sheet metal screws
• two sets of 18–gauge, twisted–pair (two wires each set) audio cable, sufficient in length to connect the
speaker and microphone assembly (in the menu sign) to the interconnect module or base station.
Important
The twisted–pair of wires for the microphone connection must be shielded for
proper operation. In duplex systems, microphone and speaker cannot be in the
same jacket unless specially designed for duplex such as 3M 78–8095–0180–8.
• sufficient twisted–pair sets of audio cable to connect other components such as monitor speaker, vehicle
detection device, etc.
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