Description
IMPRES RM730 Small Remote Speaker Microphone
Mission-Critical Compact Audio Performance
Equip your field team with a heavy-duty, submersible remote speaker microphone designed for extreme environment voice clarity.
The genuine Motorola PMMN4131B is a high-performance Motorola PMMN4131B Remote Speaker Microphone for MOTOTRBO R7 portables engineered to deliver crisp transmissions in challenging industrial landscapes. Integrating the Motorola PMMN4131B into your standard operational layout ensures that critical field dispatches are clearly heard even over high background decibels. This professional audio accessory utilizes proprietary smart technology to actively balance acoustic thresholds when coupled to your handheld transceiver.
Perfect for public safety personnel, heavy manufacturing lines, utility workers, and discrete hospitality security teams, the Motorola PMMN4131B resolves the operational challenge of handling bulky hardware during fast-paced shifts. Its slim, low-profile physical design minimizes clothing snag points, allowing the module to sit close to the user's chest panel without sacrificing acoustic power. This model represents the current factory-authorized revision updating previous legacy Motorola PMMN4131 configurations.
The structural outer shell features an integrated windporting microphone grill that blocks roaring wind distortions while rapidly shedding rainwater to keep the internal acoustic chamber clear. A built-in 3.5mm secondary jack provides a secure port for linking optional receive-only earpieces for silent, confidential message monitoring. Operators must make sure that the low-profile side connector thumb screw is fully hand-tightened to maintain the factory-certified environmental seal against moisture entry.
Key Features & Benefits
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IMPRES Intelligent Audio: Functions as an optimized Motorola PMMN4131B Remote Speaker Microphone for MOTOTRBO R7 tool to automatically balance audio gain levels.
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IP68 Submersible Architecture: Certified completely dust-tight and waterproof, remaining fully operational after immersion in up to 2 meters of water for 4 hours.
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99 Phon Loud Speaker Core: Generates exceptional audio output power to pierce through loud background ambient noise levels safely.
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Tactile Emergency Button: Incorporates a prominent, high-visibility orange emergency button on top of the housing for rapid emergency signaling.
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360-Degree Swivel Clip: Features a heavy-duty rotating garment clip that anchors the microphone chassis flat against tactical vests or uniform straps.
Specifications
| Attribute |
Details |
| Brand |
Motorola |
| Model/SKU |
Motorola PMMN4131B (PMMN4131) |
| Product Type |
Remote Speaker Microphone |
| Technology |
IMPRES Audio, Windporting |
| IP Rating |
IP68 |
| Audio Output |
99 Phon |
| Audio Jack |
3.5mm Non-Threaded Mono |
| Dimensions |
2.75 x 2.16 x 0.86 Inches |
| Weight |
0.18 lbs |
| Color |
Black |
Compatibility
Radios
What's Included
| Description |
SKU/Model |
Status |
| Compact Remote Speaker Microphone |
Motorola PMMN4131B |
✅ Included |
| 360-Degree Rotating Garment Clip |
Integrated |
✅ Included |
| Portable Handheld Two-Way Radio |
— |
❌ Sold Separately |
| Secondary Listen-Only Earpiece Wire |
— |
❌ Sold Separately |
Recommended Accessories
- Motorola MOTOTRBO R7 Portable Two-Way Radio (R7) — The premium digital handheld transceiver that natively pairs with the low-profile side connector format of this microphone.
More Resources
Frequently Asked Questions
Can the integrated 3.5mm audio jack accommodate threaded earpiece plugs?
No, the built-in auxiliary audio port on the Motorola PMMN4131B is a standard, non-threaded mono receiver jack designed to take universal slide-in 3.5mm earpiece plugs cleanly.
How does the windporting feature benefit workers during outdoor use?
Windporting channels air away from the acoustic microphone core to completely eliminate the roaring distortions caused by high winds while preventing water logging during heavy rain.
Is this microphone model backwards compatible with legacy MOTOTRBO radios?
No, the Motorola PMMN4131B utilizes a specialized low-profile multi-pin side connector designed explicitly for next-generation handheld platforms and does not connect to legacy side accessory ports.
Warranty
1-year manufacturer's warranty.
