16 Installing the Radio TM9100 Installation Guide© Tait Electronics Limited August 20052.2 Selecting the Mounting PositionRequirements forSafe and ConvenientInstallationEnsure the mounting position complies with the following safety warnings:Warning!! Safe radio mounting■ Mount the radio securely so that it will not break loose in the event of acollision. An unsecured radio is dangerous to the vehicle occupants.■ Mount the radio and the microphone where they will not interfere with:■ the deployment of passenger airbags■ the vehicle operator controls■ the vehicle operator’s view.Gap BetweenRadio Bodyand MountingSurfaceNote It may be necessary to mount the radio upside down to maintain agap of more than 3/8 inch (10 mm) between the bottom surface ofthe radio body and the mounting surface.Inspect the vehicle and determine the safest and most convenient positionfor mounting the radio. Make sure that there is sufficient clearance behindthe radio for the heatsink and cables.IP54 ProtectionClass ConsiderationsThe radio fulfils the requirements of the IP54 protection class.Important However, do not mount the radio in areas where it can betemporarily submerged from an accumulation of water orother liquids (e.g. when using a high-pressurecleaning device).The IP54 protection class does not apply when:■ the control head is removed from the radio body■ the bungs are removed from the auxiliary connector or the cavity for theexternal options connector (fitting an auxiliary connector or externaloptions connector will not restore the IP54 protection class)■ the microphone grommet is not installed.