Description
Motorola PMMN4127A WM500 Operational Critical Wireless Remote Speaker Microphone
IP67-rated Bluetooth RSM for Motorola R, TLK, ION, MXP, and EVOLVE series portables.
The Motorola PMMN4127A (WM500) is a wireless Remote Speaker Microphone (RSM) designed for operational-critical environments. Compact and lightweight, the WM500 delivers high-quality audio performance and robust Bluetooth wireless connectivity — ideal for professionals who need reliable, hands-free communication without the constraints of a cable. The PMMN4127A is the updated version of the PMMN4127.
Key Features
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IP67 Rated: Fully dustproof and submersible in 1 meter of water, built to withstand harsh operational environments.
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Bluetooth Wireless Connectivity: Reliable wireless link to compatible Motorola portables, eliminating cable management and improving mobility.
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Windporting Microphone: Delivers loud, clear audio for efficient communication even in noisy, outdoor, or high-wind environments.
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Emergency & Programmable Buttons: Dedicated orange emergency button plus multiple programmable buttons for fast access to critical functions.
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Long Battery Life: Extended usage time for uninterrupted operations throughout long shifts.
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Compact & Lightweight: 58 mm (W) × 24.5 mm (H) × 81 mm (L) and 0.235 lb for comfortable all-day wear.
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Includes Charging Cable: Ships with a charging cable for convenient recharging between shifts.
Specifications
| Attribute |
Details |
| Brand |
Motorola |
| Model / SKU |
PMMN4127A (WM500; replaces PMMN4127) |
| Product Type |
Wireless Remote Speaker Microphone (RSM) |
| Connectivity |
Bluetooth |
| IP Rating |
IP67 |
| Microphone Type |
Windporting |
| Audio Jack |
3.5mm (non-threaded) |
| Volume Control |
Yes |
| Display |
None |
| Programmable Buttons |
Orange emergency button + multiple programmable buttons |
| Weight |
0.235 lb |
| Dimensions |
58 mm (W) × 24.5 mm (H) × 81 mm (L) |
Compatibility
| Model |
Series |
| R5 |
Motorola R Series |
| R7 |
Motorola R Series |
|
TLK110, TLK100, TLK100I, TLK150 |
Motorola TLK Series |
| ION |
Motorola ION Series |
| MXM600, MXP600, MXP660 |
Motorola MXP Series |
| EVOLVE |
Motorola EVOLVE Series |
| LEXL11 |
Motorola LEX Series |
| MACKENZIE, RAJANG |
Motorola Regional Models |
What’s Included
| Description |
SKU / Model |
Status |
| WM500 Wireless Remote Speaker Microphone |
PMMN4127A |
Included |
| Charging Cable |
— |
Included |
| Compatible Portable Radio |
— |
Sold Separately |
Recommended Accessories
Compatible Radios
More Resources
Frequently Asked Questions
What is the wireless range of the PMMN4127A?
Motorola does not publish a specific Bluetooth range for the WM500. Typical Bluetooth Class 2 devices operate at up to approximately 10 meters (33 feet) in open environments. Actual range may vary depending on environmental conditions and obstructions. Contact Atlantic Radio for deployment guidance.
What is the difference between the PMMN4127 and the PMMN4127A?
The PMMN4127A is the current factory revision of the PMMN4127. Both part numbers refer to the same WM500 Wireless RSM with identical specifications and compatibility.
Is the PMMN4127A waterproof?
Yes. The PMMN4127A carries an IP67 rating, making it fully dustproof and submersible in 1 meter of water for up to 30 minutes.
Warranty
1-year manufacturer’s warranty.
