Motorola Tactical PTT Module PMLN6827A - High-Performance Interface for APX RadiosThis interface module connects to your APX radio and to a variety of bone conduction devices, allowing you to create a complete solution in critical environments. This Tactical Interface Module operates exclusively in push to talk mode. Motorola Tactical Audio Accessories were designed with a high performance interface enhanced by a high speed Digital Signal Processor (DSP), which only detects the human voice. This allows communication in voice