Motorola Original AARMN4044A: Push-To-Talk Interface Module. This is the Interface Module for the EMS(Ear Mirophone System). Push-To-Talk Only. Factory Mutual Approved.This Interface Module to be used with Ear Microphone System (EMS) BDN6677, BDN6678 or BDN6641. (They must be purchased separate)
Fits: HT750, HT1250 NOTE: To avoid confusion, for ordering purposes, the suffix letter after the stock number is not listed.