The RD 4442 indoor radio system is suitable for a wide range of indoor radio scenarios. Thanks to its clear, unobtrusive front it blends inconspicuously with walls and ceilings and can thus be installed virtually anywhere. Its backside is characterised by a thermally optimised design for effective heat dissipation. It is mounted intuitively via a bayonet locking system. The mounting elements can be reused when the device is replaced.