APX™ XE500 Remote Speaker Microphones (RSMs) are designed with the user’s extreme environment in mind. These RSMs feature an asymmetrical shape to help you find the controls without looking, even while wearing bulky gloves. The large push-to-talk button and an extra-large emergency button, which illuminates orange when activated, are easy to locate, but shielded so they're not accidentally activated.
Motorola PMNN4106A XE500 Extreme Remote Speaker Microphone, Channel Knob
Includes dedicated large channel knob designed to mimic the channel selector of the radio
Compatible with APX 8000, APX 7000, APX 7000XE, APX 6000, APX 6000XE, SRX 2200 radios