sets – Take your pick.
HSD 171
MUTE
ON ON
HSD 271
Swiveling through 270 degrees, the microphone arm allows you to place the microphone on the left or right of your mouth. Noiseless microswitches automatically activate and mute the microphone.
The detachable cable is easy to ser- vice or replace if defective. A rugged, locking
All HSD models provide the micropho- ne signal on a standard
The HSD 271 is also available in a spe- cial version with a single earphone. This model is the perfect choice for all jobs where the user needs to listen to natural sounds as well as those coming through he headphones.