PMMN4106 Motorola APX XE500 Extreme Remote Speaker Microphone, Channel Knob. High Impact Green. Heat Resistant.
Motorola 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.
XE500 RSMs feature a dedicated channel knob designed to mimic the channel knob of the radio. High Impact Green. (PMMN4106A, PMMN4106B, PMMN4106C, PMMN4106D)