Motorola PMMN4077 Remote Speaker Microphone - Loud, Hands-Free Audio for Every Mag One Radio
Key Features
- 1-watt front-facing speaker punches through background noise for clear, intelligible calls.
- Integrated noise-reducing microphone and large textured Push-to-Talk (PTT) button for easy, glove-friendly keying.
- 3.5 mm audio jack accepts an optional surveillance earpiece for discreet receive-only listening.
- IP54-rated Mag One housing shrugs off rain, dust, and the occasional drop.
- Swivel clothing clip rotates 360° to keep the mic facing forward on any uniform.
- Genuine Motorola accessory backed by a full 12-month OEM warranty.
Technical Specifications
| Accessory Type | Remote Speaker Microphone (RSM) |
|---|---|
| Speaker Output | 1.0 W (typical) |
| Microphone | Noise-canceling electret, front-port |
| Audio Jack | 3.5 mm, receive-only |
| Ingress Protection | IP54 (dust & splash) |
| Cable Length | Coiled, ≈ 22 in (stretched ≈ 48 in) |
| Operating Temp | -30 °C to +60 °C |
| Weight | ≈ 140 g / 4.9 oz |
| Part Number | PMMN4077A |
| Warranty | 12-month Motorola OEM |
Compatible Mag One Radios
- BPR50dX (Digital)
- BPR40 & BPR40d
- BC400D
- X10D
- Any other Motorola Mag One portable using the standard 2-pin audio connector
Why Choose Genuine Motorola Audio Accessories?
- Tuned impedance and audio response prevent clipping and distortion.
- Life-cycle-tested for pull strength, flex, vibration, and temperature extremes.
- Supported by Motorola’s OEM warranty for no-hassle replacements.
Frequently Asked Questions
Can I add an earpiece to this microphone?
Yes. Plug any Motorola 3.5 mm receive-only earpiece into the side jack for discreet listening.
Is the clip replaceable?
Absolutely. The spring swivel clip is field-replaceable if it becomes worn or damaged.
Does the mic support VOX?
The RSM works with VOX-enabled Mag One radios—simply enable VOX in the radio menu.