Description
IP57 Submersible Windporting Remote Speaker Microphone
Heavy-duty submersible shoulder speaker microphone featuring Windporting noise reduction and IP57 water-submersion protection for MOTOTRBO portable radios.
The Motorola PMMN4075A (catalog part PMMN4075 / PMMN4075A) is a genuine original equipment manufacturer (OEM) submersible remote speaker microphone (RSM) built for high-demand, wet, and rugged operational environments. Designed for fire service, public safety, utility crews, outdoor construction, and industrial processing, this shoulder mic allows personnel to communicate instantly without unclipping their radio transceiver from their belt.
Engineered to withstand harsh elements, the Motorola PMMN4075A features an IP57 ingress protection rating, allowing it to withstand complete water submersion down to 1 meter for up to 30 minutes. It integrates Motorola's patented Windporting™ technology, which dampens severe wind noise and prevents water from pooling over the microphone element to maintain crystal-clear transmit audio. The microphone includes a large, tactile side-mounted Push-To-Talk (PTT) button that is easy to operate while wearing heavy work gloves, a heavy-duty 360-degree rotating clothing clip, and a flexible unibody coiled cable. By omitting external audio ports, the PMMN4075A maintains an airtight, fully sealed enclosure across FCC Licensing regulated communication channels.
Key Features & Benefits
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IP57 Submersible Water Protection: Fully sealed against heavy dust ingress and submersible in water up to 1 meter deep for 30 minutes.
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Windporting™ Audio Noise Reduction: Filters out severe background wind noise and sheds water from the grill element to preserve clear audio clarity.
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Fully Sealed Solid Housing: Omits external earpiece ports to maintain complete water-tight integrity during full submersion.
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Glove-Friendly PTT Button: Large, textured side Push-To-Talk switch delivers positive mechanical feedback even when wearing heavy work gloves.
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360-Degree Heavy-Duty Swivel Clip: Metal-reinforced rear clothing clip rotates 360 degrees to secure the mic tightly on shoulder straps, lapels, or turn-out gear.
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Genuine Motorola OEM Reliability: Precision-engineered by Motorola Solutions for seamless electrical performance and rugged durability.
Specifications
| Attribute |
Details |
| Brand |
Motorola Solutions |
| Model / SKU |
PMMN4075A / PMMN4075 |
| Product Type |
Submersible Remote Speaker Microphone (RSM) |
| Ingress Protection Rating |
IP57 Dustproof & Submersible (1m for 30 min) |
| Audio Technology |
Windporting Audio Noise Reduction |
| Earpiece Jack |
None (Fully Sealed Housing for Submersion) |
| Intrinsic Safety Rating |
UL Approved (Select Radio Combinations) |
| Mounting Hardware |
360-Degree Swivel Stainless Steel Reinforced Clip |
| Housing Construction |
High-Impact Commercial-Grade Polymer |
| Weight |
0.55 lbs (0.25 kg) |
Compatibility
Compatible Motorola MOTOTRBO Portable Radios
|
|
|
|
| XPR3300 |
XPR3300e |
XPR3500 |
XPR3500e |
| DP2400 |
DP2400e |
DP2600 |
DP2600e |
| DP3441 |
DP3441e |
DP3661e |
DEP550 |
| DEP550e |
DEP570 |
DEP570e |
XiRP6600 |
| XiRP6600i |
XiRP6620 |
XiRP6620i |
R5 |
What’s Included
| Description |
SKU/Model |
Status |
| Motorola IP57 Submersible Remote Speaker Microphone |
PMMN4075A |
Included |
| 360-Degree Swivel Lapel Clip |
Integrated |
Included |
| Heavy-Duty Coiled Interface Cable |
Integrated |
Included |
Recommended Accessories
Batteries & Charging Hardware
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Motorola PMNN4409BR IMPRES Li-Ion Battery – High-capacity rechargeable battery pack for XPR 3000 and XPR 3000e series portables.
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Motorola PMPN4527A IMPRES Single-Unit Charger – Desktop rapid charger dock for MOTOTRBO handheld transceivers.
Radio Carry Accessories
More Resources
Frequently Asked Questions
Is the Motorola PMMN4075A fully waterproof?
Yes. The Motorola PMMN4075A holds an IP57 ingress protection rating, meaning it is dustproof and completely submersible in water up to 1 meter (3.3 feet) for up to 30 minutes.
Does the PMMN4075A have an earpiece audio jack?
No. To preserve its IP57 submersible rating and prevent liquid penetration into internal circuitry, the PMMN4075A features a solid, un-ported housing without a 3.5mm earpiece jack. (If an earpiece jack is required, consider the IP54-rated PMMN4076A).
How does Windporting technology work on this speaker mic?
Windporting technology dramatically reduces background noise caused by heavy winds blowing across the microphone. It also prevents water from clogging the grill mesh, allowing clear voice transmission during heavy rainfall.
Will the PMMN4075A work with Motorola XPR 7000 series radios?
No. The PMMN4075A features the compact multi-pin connector engineered specifically for the XPR 3000 and XPR 3000e series (as well as DP2000, DEP 500, and XiR P6600 series portables).
Is this an authentic Motorola OEM microphone?
Yes, the Motorola PMMN4075A is a genuine original equipment manufacturer remote speaker microphone produced directly by Motorola Solutions.
Warranty
1-year manufacturer’s replacement warranty.
