Description
Heavy-Duty IMPRES Remote Speaker Microphone with Volume Control & Windporting
Genuine Motorola submersible IP57 palm microphone featuring smart IMPRES audio equalization, windporting noise reduction, multi-step volume controls, and emergency button.
The Motorola PMMN4046AL (catalog part PMMN4046 / PMMN4046A / PMMN4046AL) is an authentic original equipment manufacturer (OEM) commercial remote speaker microphone (RSM) engineered for mission-critical and heavy industrial environments. Built to deliver dependable voice clarity during severe weather and high-decibel operations, this heavy-duty speaker mic carries an IP57 ingress protection rating, allowing it to withstand complete water submersion up to one meter for 30 minutes without seal failure. It serves as an essential audio tool for public works, utilities, field engineering, transportation fleets, and industrial plant operations.
Equipped with Motorola’s proprietary Windporting acoustic technology, the Motorola PMMN4046AL dramatically reduces turbulence noise caused by severe crosswinds and outdoor gusts while preventing pooled water from clogging the microphone port during torrential downpours. The unit features built-in IMPRES smart audio circuitry that communicates continuously with the host radio to balance audio gain, suppress ambient background rumble, and prevent voice clipping. An integrated top-mounted volume toggle allows operators to adjust receive audio levels without touching the radio, while a high-visibility orange emergency button and side programmable key provide instant access to critical functions. Operating in full compliance with commercial FCC Licensing standards, the PMMN4046AL connects via Motorola's multi-pin GCAI side connector to provide a locked, weather-tight connection across MOTOTRBO XPR, DP, DGP, and APX series portable radios.
Key Features & Benefits
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IP57 Submersible Protection: Completely sealed against dust ingress and water submersion up to 1 meter (3.3 feet) for 30 minutes, ensuring dependable performance in driving rain and mud.
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Windporting Acoustic Technology: Eliminates wind howling across the microphone face and prevents water from pooling over the acoustic port for clear audio transmission.
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IMPRES Intelligent Audio System: Automatically balances transmit audio gain and optimizes frequency response to prevent distortion whether whispering or speaking loudly.
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Integrated Volume Control Toggle: Convenient multi-step volume adjustment directly on the microphone housing enables fast audio level changes on the move.
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Top-Mounted Emergency Alert Key: High-visibility orange tactile button provides single-touch duress and emergency priority call activation.
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Rugged GCAI Multi-Pin Interface: Heavy-duty connector with a knurled thumbscrew locks securely into the radio chassis to prevent accidental detachment.
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Full-Sealed Audio Architecture: Engineered without an external audio jack to maintain maximum IP57 waterproof enclosure integrity in wet, wash-down, or industrial settings.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
PMMN4046AL / PMMN4046A / PMMN4046 |
| Product Type |
Submersible Remote Speaker Microphone (RSM) |
| Ingress Protection |
IP57 (Dust-Protected & Submersible to 1m for 30 min) |
| Audio Technology |
IMPRES Smart Audio Optimization |
| Microphone Acoustic Design |
Windporting Technology |
| Volume Control |
Integrated Push-Button / Toggle Volume Control |
| Emergency Button |
Top-Mounted Tactile Orange Emergency Button |
| Programmable Controls |
1 Programmable Side Button + Orange Emergency Button |
| External Audio Jack |
None (Fully Sealed Housing) |
| Radio Connector |
Motorola Multi-Pin GCAI with Knurled Thumbscrew |
| Dimensions (W x H x L) |
1.25 x 27.00 x 2.25 in (31.75 x 685.80 x 57.15 mm extended) |
| Weight |
Approx. 0.70 lbs (317.5 g) |
| Operating Temperature |
-30°C to +60°C (-22°F to +140°F) |
| Color Finish |
Matte Black Heavy-Duty Polymer |
Compatibility
Compatible Motorola Portable Two-Way Radios
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| APX2000 |
APX4000 |
DGP4100 |
DGP5050E |
| DGP5550E |
DGP6100 |
DGP8050E |
DGP8550E |
| DP3000 |
DP4400 |
DP4400E |
DP4401 |
| DP4401E |
DP4600 |
DP4600E |
DP4601 |
| DP4601E |
DP4800 |
DP4800E |
DP4801 |
| DP4801E |
GP328D |
GP328DPLUS |
GP338D |
| GP338DPLUS |
MTP830850FUG |
MTP830S |
MTP850S |
| XIRP8600 |
XIRP8600I |
XIRP8608 |
XIRP8608I |
| XIRP8620 |
XIRP8628 |
XIRP8628I |
XIRP8660 |
| XIRP8660I |
XIRP8668 |
XIRP8668I |
XIRP8808R |
| XPR5380E |
XPR7350 |
XPR7350E |
XPR7380 |
| XPR7380E |
XPR7550 |
XPR7550E |
XPR7550IS |
| XPR7580 |
XPR7580E |
XPR7580EIS |
|
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More Resources
Frequently Asked Questions
What does the "AL" suffix designate on part number PMMN4046AL?
The "AL" designation identifies the latest factory production iteration of the base part number PMMN4046 (and previous revision PMMN4046A), incorporating updated internal manufacturing components and modern lead-free construction while maintaining identical physical fit and complete backward compatibility.
How does Motorola's Windporting technology work?
Windporting acoustic design eliminates the howling and distortion caused by high winds blowing across the microphone casing. It prevents wind from interfering directly with the internal microphone diaphragm and allows water to roll off without pooling over the acoustic port, ensuring clear audio even in severe outdoor storms.
Does the PMMN4046AL have an external 3.5mm earpiece jack?
No. The PMMN4046AL is engineered without an auxiliary audio jack. By omitting an external audio port, the microphone maintains a completely sealed, impermeable IP57 housing that eliminates potential water entry points during total submersion.
What does IMPRES audio technology do on this speaker microphone?
Motorola IMPRES smart audio communicates directly with the host radio's DSP (Digital Signal Processor). It optimizes microphone sensitivity and equalizes audio gain dynamically, ensuring that whispers are amplified and loud shouts or machinery rumbles are balanced to prevent clipped, distorted transmissions.
What is the difference between IP57 and IP54 rated microphones?
An IP54 microphone protects against dust deposits and splashing water. In contrast, an IP57 microphone like the PMMN4046AL provides a substantially higher level of environmental sealing, protecting internal components against fine dust ingress and allowing the unit to survive complete submersion in water up to 1 meter for 30 minutes.
Warranty
1-year manufacturer’s replacement warranty.
