Aerpro ARJ45IZ1 RJ45 Pass-Through Adaptor has been designed specifically to suit various Holden & Isuzu vehicles. It replaces the spare factory switch blanking plates in the vehicle dashboard that measure 22.5mm wide x 33.5mm high, providing a professional and seamless integration solution for your vehicle when installing a hideaway UHF radio with remote microphone. The connection type is RJ45 pass-through, the cable supplied with the hideaway UHF radio plugs into the rear of the adaptor, while the plug on the end of the remote microphone will plug into the face of the adaptor. The UHF Radio text illuminates blue making it easy to find day and night and the clip-in design combined with the simple 2 wire connection for illumination, makes it quick and easy to install.