OTTO's three-wire surveillance kits separate the PTT and the lapel microphone for more discreet operation. The microphone may be clipped near the mouth, while the PTT can be hidden in a sleeve to activate inconspicuously. The third wire connects the earphone to a clear acoustic tube and silicone eartip for discreet listening to incoming communications.
Compatible with EF Johnson radios: VIKING VP 400/D41VP600/VP900 ASCEND ES/51SL/51SL ES/5100/5100ES
