Motorola NS750 IMPRES™ RSM remote speaker microphone is engineered for critical communications in the harshest environments. Dual oversized PTT buttons, Smart Audio Switching and a rugged IP68-rated design let you focus on the mission, not the device.
Overview & Benefits
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Dual large PTT buttons (front & side) with tactile feedback for immediate transmission
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Smart Audio Switching — auto-toggle between RSM speaker and Secondary Audio Accessory (SAA) with alert tone reminder
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Windporting design — crystal-clear voice in wind and high-noise settings
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Ruggedized, waterproof housing: high-impact green bezel, IP68 dust & water protection
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Programmable button for quick feature access
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360° swivel clip with D-ring for versatile mounting
Specifications
| Parameter | Value |
|---|---|
| Model | PMMN4150 (long cable) / PMMN4151 (short cable) |
| Compatible Radios | MOTOTRBO R7 [VHF/UHF], MXP600 [UHF] |
| Dimensions (head only) | 68 × 94 × 29 mm |
| Weight (kit) | PMMN4150: 296 ± 5 g; PMMN4151: 238 ± 5 g |
| Housing Material | High-impact polymer with green bezel |
| Connectors | 4-pole Nexus interface (TX/RX), 3.5 mm audio jack (receive only) |
| Microphone | Electret ECM, sensitivity −35 ± 2 dBV, THD ≤ 5 % |
| Speaker | Ø 36 mm; THD < 15 %; max output 2.5 W |
| Cable | PMMN4150: 490 mm (coiled)–1700 mm (extended); PMMN4151: 250–480 mm; UL 94 V0; ≥ 40 lbs; ≥ 1 000 000 flex cycles |
| Ingress Protection | IP64, IP66, IP67, IP68 |
| Operating Temperature | −30…+60 °C |
| Additional Features | IMPRES™ audio, Intelligent Audio, Alert Tone Reminder, Work-When-Wet |
Package Contents
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NS750 IMPRES™ RSM remote speaker microphone
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PMMN4150 or PMMN4151 cable (user’s choice)
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User manual
Applications
Emergency services, security, utilities and industrial sites—where instant, reliable voice communication is critical under extreme conditions.
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Cashless payments
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Self delivery
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Courier delivery
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Nova Poshta
