Description
WM800 Wireless Audio with Four-Microphone Adaptive Noise Suppression
The Motorola PMMN4158C WM800 Wireless Remote Speaker Microphone puts push-to-talk, speaker audio and radio controls within reach without a cable running between the microphone and a supported radio. Four high dynamic range microphones and adaptive noise suppression help track speech and reduce surrounding noise, while an integrated task light supports close-up tasks in low light.
Designed for supported APX and SRX deployments, the WM800 requires compatible radio hardware, firmware and wireless configuration. It is not a universal Bluetooth microphone. Check the radio and operating mode before ordering, particularly for standard APX radios and mobile installations.
Key Features
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Four HDR microphones: Beam-forming microphone arrangement with adaptive noise suppression and Windporting.
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Radio-enabled Adaptive Audio Engine: Supported functions depend on the paired radio and software.
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Wireless connection: Bluetooth 5.2 with a published range of 30 meters line of sight. Buildings, obstructions and operating conditions can reduce range.
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Pairing support: Secure NFC pairing and Motorola Proximity Pairing on supported configurations.
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Accessible controls: PTT, emergency, volume, power, two side programmable buttons, a front programmable/ViQi button and separate task-light control.
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Replaceable battery: Published 27-hour battery life at a 5/5/90 duty cycle, not continuous transmission.
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IP68 protection: Manufacturer rating of 2 meters for 4 hours, subject to the applicable installation and care instructions.
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Flexible charging: USB-C or the optional compatible dual-unit charger.
Specifications
| Attribute |
Details |
| Brand |
Motorola |
| Listed part number |
PMMN4158C |
| Product family |
WM800 / PMMN4158 |
| Microphones |
Four HDR microphones; beam forming and adaptive noise suppression |
| Wireless |
Bluetooth 5.2; 30-meter line-of-sight reference |
| Audio accessory interface |
3.5 mm non-threaded |
| Speaker reference |
100 phon at 12 inches / 300 mm; 1 W rated output |
| Battery |
Replaceable, 2150 mAh |
| Battery life |
27 hours at 5/5/90 duty cycle; actual runtime varies |
| Charge time |
Approximately 2.5 hours |
| Charging |
USB-C or optional dual-unit charger |
| Dimensions |
67.5 × 98 × 32 mm, RSM head without clip |
| Weight |
180 ± 5 g, full-kit reference |
| IP rating |
IP68, 2 meters for 4 hours; Work-When-Wet support |
| Operating temperature |
-20°C to +60°C / -4°F to +140°F |
| Clip |
360-degree rotating clip with D-ring |
| Hazardous-location reference |
Manufacturer lists UL Division 2 non-incendive classification. Verify the exact approved radio, battery and accessory combination and site requirements before use. |
| Listed country of origin |
Malaysia |
Technical references above are from Motorola's January 2025 WM800 family data sheet, which identifies PMMN4158 without a revision suffix. Confirm any revision-specific differences for the supplied PMMN4158C.
Radio Compatibility and Requirements
| Category |
Manufacturer-Listed Models |
Important Requirements |
| APX NEXT and N-line portables |
APX NEXT, APX NEXTi, APX N70, APX N50, APX N30 |
Supported firmware and wireless configuration; ViQi requires an applicable supported radio. |
| Other APX and SRX portables |
APX8000, APX6000 BN, APX900, APX6000XE, APX8000XE, APX8000H, APX8000HXE, SRX2200 |
Check exact radio version. Standard APX analog-channel operation is not supported in the cited data sheet. |
| APX mobile radios |
APX8500, APX6500 BN, APX5500 BN, APX4500 BN, APX2500 BN, APX1500 BN |
Confirm supported installation and wireless configuration. PMMN4097 Bluetooth gateway is not compatible. |
Existing Listing References Requiring Confirmation
The original listing also names APX5000, APX 6000/5000 Series, APX 6500/5500 Series, APX1500ENH, APX2500ENH, APX4500ENH, APX N70XE and APX NEXT INTL. These references are retained here, but the cited data sheet does not establish every one of those exact model names or configurations. Do not assume an ENH label is interchangeable with a BN version; confirm the individual radio before ordering.
Published Firmware References
| Equipment |
January 2025 Data Sheet Reference |
| APX NEXT radios |
R07.30.00 and beyond |
| APX N70 |
R4.30.00 and beyond |
| Standard APX, APX N50 and APX N30 |
R34.02.00 |
| WM800 |
R02.60.00 and beyond |
Confirm current firmware guidance for the exact deployment. A listed firmware reference does not replace the hardware, mode and installation requirements.
What's Included
| Item |
Status |
Details |
| WM800 wireless remote speaker microphone |
Included |
Listed PMMN4158C package |
| USB-C charging cable |
Included |
As specified in this listing's package contents |
| Compatible radio |
Sold separately |
Requires supported hardware, firmware and configuration |
| Dual-unit charger and secondary earpieces |
Sold separately |
Optional accessories |
Optional Accessories
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PMPN4653 Dual-Unit Charger: Manufacturer-listed charging option with North American power supply.
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PMNN4846 Battery with Swivel Clip: Manufacturer-listed 2150 mAh replacement battery option.
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PMLN8652 Receive-Only Earpiece: Manufacturer-listed 3.5 mm loud-audio earpiece with coiled translucent tube.
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PMLN8650 N-ear 360 Flexo Dynamic Earpiece: Manufacturer-listed secondary audio option.
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PMKN4294 Series USB-C Charging Cable: Manufacturer-listed replacement cable family; confirm the required revision.
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PMLN8675, PMLN8682 and PMLN8312 Carry Accessories: Manufacturer-listed swivel MOLLE clip, coiled tethering kit and rotating clip with D-ring options.
Frequently Asked Questions
Will the WM800 pair with any Bluetooth radio?
No. It is designed for specified Motorola configurations. Confirm the exact radio model, firmware, operating mode and pairing requirements rather than relying on Bluetooth capability alone.
Can I use it with an APX mobile radio?
The data sheet lists APX8500 and specified BN versions of APX6500, APX5500, APX4500, APX2500 and APX1500. These are mobile radios, not portables. Confirm the required installation; the PMMN4097 Bluetooth gateway is expressly excluded.
Does it support analog channels on standard APX radios?
The January 2025 WM800 data sheet states that it is not supported with standard APX radios in an analog channel. Verify your intended operating mode before purchase.
How far can I move from the paired radio?
The published Bluetooth range is 30 meters under line-of-sight conditions. Obstructions and interference can reduce usable distance; test the actual work environment.
Does the battery last 27 hours of continuous talking?
No. The 27-hour reference uses a 5/5/90 duty cycle. Frequent transmitting, audio use and operating conditions affect runtime. The battery is replaceable and the published charge time is approximately 2.5 hours.
Does every radio support the ViQi button?
No. ViQi functions depend on an applicable supported radio and configuration. A dedicated button does not add ViQi capability to an unsupported radio.
Is the WM800 approved for every hazardous location?
No. The manufacturer lists UL Division 2 classification, but suitability depends on the exact approved equipment combination and location requirements. Do not treat the microphone's listing as approval for every radio, battery or work site.
What does the IP68 rating cover?
The manufacturer specifies 2 meters for 4 hours for the WM800. Follow the applicable sealing, installation and care instructions; the microphone rating does not establish the rating of the complete radio system.
Are PMMN4158, PMMN4158A, PMMN4158B and PMMN4158C identical?
This listing supplies PMMN4158C and identifies the earlier PMMN4158, A and B references. The family data sheet uses PMMN4158 without a suffix; it does not establish that every revision has identical specifications or replacement suitability. Confirm any revision-specific requirement before ordering.
What warranty is listed?
1-year manufacturer's warranty.
More Resources
Warranty
1-year manufacturer's warranty.
