- Phoenix, Arizona, United States
- US $120.00
- Jun 9th
USED Production Intercom Telephone Handset for Intercom Systems -- 4-pin Connection. These heavy duty handsets are equipped with dynamic transducers suitable for intercom use. To prevent feedback and permit high levels before feedback, the interior of the handset is partially filled with a dense mastic material, blocking internal acoustic coupling between the microphone and the earspeaker.