SKU: 17605506390

Motorola PMMN4131B IMPRES RM730 Small Remote Speaker Microphone (IP68)

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Description

Motorola PMMN4131B IMPRES RM730 Small Remote Speaker Microphone (IP68)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

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

  • IMPRES Intelligent Audio: Functions as an optimized Motorola PMMN4131B Remote Speaker Microphone for MOTOTRBO R7 tool to automatically balance audio gain levels.
  • IP68 Submersible Architecture: Certified completely dust-tight and waterproof, remaining fully operational after immersion in up to 2 meters of water for 4 hours.
  • 99 Phon Loud Speaker Core: Generates exceptional audio output power to pierce through loud background ambient noise levels safely.
  • Tactile Emergency Button: Incorporates a prominent, high-visibility orange emergency button on top of the housing for rapid emergency signaling.
  • 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
R7 R7a ION MXP600
MXP660

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.

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 17605506390

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    4.8 ★★★★★
    Based on 5 reviews
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    Product Reviews
    J
    Verified Purchase
    James
    Grantham, US
    ★★★★★ 5
    Great Banana Plugs
    Size: 6 Pairs / 12 pcs
    I recently purchased these FosPower banana plugs to tidy up my speaker wiring, and they’ve been a significant improvement over bare wire ends. Installation is straightforward: strip the wire, loosen the two tiny set screws, slide the wire in, tighten everything down, and then screw the barrel back on. Once assembled, the connection feels secure and tight, making it much easier to swap gear around and reducing the risk of stray strands causing a short. The standout feature of this design is the dual set-screw clamp. It firmly grips the speaker wire without relying on the outer collar to “crush” it in place. I’m using 12-gauge wire, and it holds well for my setup. Initially, the plugs may fit snugly in some binding posts. Once seated, there’s no wobble, but it might take a bit of extra push the first time. The set screws are small, so a bit of precision is needed. Use a small flathead screwdriver and don’t over-tighten them. Overall, these plugs feel well-made, look clean once installed, and fulfill their purpose as banana plugs: making speaker connections quick, neat, and reliable.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 27, 2026
    T
    Verified Purchase
    Todd C Blake
    San Leandro, US
    ★★★★★ 5
    Great Banana Plugs!
    Size: 6 Pairs / 12 pcs
    These FosPower banana plugs work very well. I have used dozens of these great FosPower banana plugs over the years, and they definitely work as advertised. When comparing apples to apples (or bananas in this case....lol), all Banana plugs work virtually the same way, and these banana plugs are no different. Strip speaker wire, unscrew banana plug cover, loosen speaker wire retaining screw(s), insert speaker wire, tighten speaker wire retaining screw(s), screw on banana plug cover, and wallah, a secure/conductive speaker/amplifier wire connector is created. Albeit, some banana plugs require the speaker wire to be splayed over a hollow post, and then they are held down by a screw-on retainer/cover. However, I much prefer these FosPower dual retaining screw type of banana plugs for their speaker wire holding ability. I always use high quality 14 gauge OFC speaker wire with these FosPower banana plugs, and they work perfectly together. I have used these FosPower banana plugs with many different speaker and amplifier brands over the years, including Klipsch, Pioneer, Polk, Denon, Dayton Audio, and Fosi with no problems at all. They just work, and work well. I have never had a FosPower banana plug break, release the speaker wire or short out, in all of the years that I have used them. Yes, these FosPower banana plugs do fit rather tightly into the connectors, at first, on a lot of speaker and amplifier brands/models. However, after the initial "squeeze" the banana plugs will lossen up, and become easier to install and remove. However, they still retain their great holding ability even after the initial squeeze. In order to overcome this initial "tightness," I usually just stick the FosPower banana plugs into a connector of an old portable amplifier, before assembling them, in order to squeeze them before inserting them into their final speaker or amplifier destinations. This is especially useful when working in tight places, where there is not much room to work in order to push the FosPower banana plugs into their tight connections firmly. Overall, I highly recommend these FosPower banana plugs. I am currently using them all over the house and shop for home theater and music listening (and testing projects). Just be aware of the tight fit in some speakers and amplifiers. Also, the 2 very tiny speaker wire retaining screws can be a challenge sometimes. Just use a good standard blade jewelers screwdriver, and be careful not to remove the retaining screws all of the way or over-tighten them. Once these things are mastered, using these FosPower banana plugs becomes second nature. Have fun!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 28, 2024
    S
    Verified Purchase
    Steve M Vedder
    Omaha, US
    ★★★★★ 5
    Great Product
    Size: 6 Pairs / 12 pcs
    These banana plugs have worked perfectly, no matter what gauge I have run in them, they work great. Easy assembly and great quality.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 8, 2026
    P
    Verified Purchase
    PowerTripp
    Alexandria, US
    ★★★★★ 4
    The most legit banana plugs I could find on Amazon
    Size: 6 Pairs / 12 pcs, Size: 6 Pairs / 12 pcs
    NEW PREFACE:: I am kind of glad I first bought the horribly magnetic, horribly made and GOLD PAINTED Sewell crimp on plugs (some reviewers say that Sewell are better and easier to use than the FosPower, which is true in design, but in quality of materials FosPower beats them hands down!!) ... Changing from those to these FosPower plugs plus the Monoprice 90° plugs, I am flabbergasted at the difference they make in sound quality. I have heard people say that they can hear the difference and even as an audiophile I was skeptical..... but my skepticism has been completely erased by what I am hearing with my own ears. I waited a few days to make sure I wasn’t just tripping before updating this review 🤣....but it has become clear to me how much a difference plugs made from the right materials actually make!!! I am 100% serious that the bass coming out of my Polk Signature Series tower speakers has at least doubled at the same volume. I can also now turn the volume up Way past my max volume before, without any distortion and much more clarity and less harsh highs. Everything just sounds warmer in general now which is amazing!!!! This is dangerous info for me... because now I’m thinking about making some really nice custom wires to see how much of a difference that makes 🙄🙄🤣 OK onto the review of the actual plugs here~~ These seem like decent connectors. I can’t tell if they are brass or copper, but they only have a slight hint of a magnetic property when testing them with a very powerful magnet. I was easily able to fit x2 - 14ga wires into it for bi-wiring purposes, including screwing on the collar. (As seen in my example pic) The gold plating on the tips seems legit and not painted like some of the plugs from Sewell... I have tested and tried quite a few plugs from Amazon and most seem to be crap. These however hold up better than most! These and the Monoprice 90° banana plugs with the black and red rubber sleeves. The latter are gold plated copper and have zero magnetic properties. (if you need 90° banana plugs) UPDATE: still the best plugs I have found, but upon full install found two issues. One is a defect where a set of the plug threads for the barrel cover body weren’t cut right. The body’s do not tighten and stay loose because of that. Obvious issue for vibration with metal on metal... The other issue is that even though these say they can fit different gauge wires, they seem to be geared more towards 12 or 10 gauge. I am using semi solid strand 14 gauge and find that unless I fold the wire over to make it double thick, the bolts use up all the thread and seem to become kind of loose inside the body. They won’t fully seat and keep spinning no matter how much you tighten. They seem to stay secure still but I just wonder about longevity over time with vibrations. So I just doubled up the wire and they seated fine! Not the worst issue in the world, but just kind of a pain since you have to strip the wire longer than you normally would so you can fold it over. ANOTHER UPDATE: I had to remove these plugs from the wire to connect them to a crappy spring terminal amp while my better amp was in the shop. The issue I wrote about with the set screws "bottoming out" on smaller gauge wire became a more pronounced issue! I could not unscrew the set screws anymore and just had to cut the wires... So that means I will need to purchase more of these to replace the ones I cannot get wire back into. Not the best design, but still one of the best plugs I have found on Amazon.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 26, 2021
    R
    Verified Purchase
    Russell B
    San Leandro, US
    ★★★★★ 5
    Sturdy. Tight fit. No wobble
    Size: 2 Pairs / 4 pcs
    These are the best ones I’ve found. This order will connect one wire. Luckily that’s what I needed. If you’re doing more than one wire…
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 18, 2026

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