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Critical Communications

Your push-to-X lifeline. So you are always connected.

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Experience MOTOTRBO™ Ion, next gen smart radio

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Explore APX NEXT smart radio for public safety

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Command Center Software

Experience software integration from call to case closure.

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Announcing the complete CommandCentral suite

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3D Tour: Our unified software suite in action

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Video Security & Access Control

Delivering more than just megapixels.

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Video-as-a-Service<br>for Law Enforcement

Video-as-a-Service
for Law Enforcement

Video-as-a-Service<br>for Commercial Business

Video-as-a-Service
for Commercial Business

Managed & Support Services

Our services ensure your technology is always on and ready.

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Protect your org with Cybersecurity Services

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Maximize your investment with essential services

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End-to-End Technology Ecosystem

Stay connected across voice, video, software and services.

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Body Cam Evaluation

Are you getting the most out of your body-worn cameras? Find out with this quick online assessment.

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CAD Evaluation Tool

Receive a custom CAD recommendation and learn which system is the best for your agency.

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Grants Made Easier

Jump start your grant application process with a free grants how-to guide.

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See All Education Solutions

Learning From Home?

Ensure students have access to online learning programs with Nitro™ enterprise-grade Private LTE

Build Your Solution

Get a customized radio solution for your school

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Safe Schools

See how one school district reimagined safety

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Grant Assistance

Explore recent grants and free grant assistance programs to help secure additional funding.

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SEE SAFE HOSPITALS

Reimagine safety at your hospital.

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Experience MOTOTRBO™

Increase hospital safety and boost efficiency

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Build Your Solution

Get a customized radio solution for your hospital

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Safe Stadiums

Create a streamlined communication experience and maintain safety throughout your entire facility

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MOTOTRBO Ion

Combine voice and broadband data capabilities

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Solution Builder

Select the best radios for your needs

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Shop Business Radios

Shop radios to keep your staff connected

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Transparency. Community. Trust.

Discover how to join the Trusted City Ecosystem

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Body Cam Evaluation

Are you getting the most out of your body-worn cameras? Find out with this quick online assessment.

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CAD Evaluation Tool

Receive a custom CAD recommendation and learn which system is the best for your agency.

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See All Manufacturing Solutions

Go All On

See how your team can go all on with the MOTOTRBO Ion rugged commercial smart radio

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Safe Manufacturing

Reimagine safety in manufacturing

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Boost Your Network

Enterprise-grade private LTE with Nitro™

Radio Builder

Build your two-way radio fleet online

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See All Mining Solutions

Taking mining beyond radio

Unified communications is crucial to operations & safety

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Supercharge Your Communications

Take your mining team communications further

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MOTOTRBO™ Ion

Data & voice in a single device

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Safety and security for mining

Make guesswork a thing of the past in your operations with video intelligence solutions

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Trusted USFG Partner

See why Federal agencies have chosen us as their best value technology partner for over 90 years.

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Unified Response Capabilities

Solutions meet CSfC and HIPAA for temporary, mobile assets needing access to HIE, EMR, PHI, imaging

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Secure Mobile (TAK)

Rugged MILSPEC LTE device approved for Classified Ops by NSA’s CSfC program and credentialed by NIAP

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Military NextGen 9-1-1

Advanced 911 call-taking for DoD PSAPs by augmenting voice calls with text, multimedia, and alerts

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See All Oil & Gas Solutions

Lightning Fast Data with CBRS

The digital oilfield, covered from deck to shore

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Supercharge Your Communications

The results are in from over 400+ energy workers.

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MOTOTRBO™ Ion

Data & voice in a single device

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Safe, Secure Oil & Gas

Video intelligence solutions eliminate guesswork

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Vigilant ClientPortal

Automate parking enforcement with Vigilant ClientPortal LPR software: improve enforcement safely

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L5F LPR Camera System

Missed plates can’t solve cases or generate revenue

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LPR for Parking Enforcement

Learn the 5 steps to implement your program

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Shop Business Radios

Shop compact, affordable & easy-to-deploy radio solutions

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Two-Way Radio Builder

Find the right radios for your team needs

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Elevate Communication

See why Fanatics switched to digital radio

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Safe Airports

Create a streamlined experience and maintain safety throughout your airport with a unified ecosystem

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MOTOTRBO Ion

Combine voice and broadband data capabilities

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Nitro CBRS

Fully managed, enterprise-grade private LTE

Transportation Grants

View your options in available grant programs

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Connected Utilities

Rise to the moment with resilient, reliable, real-time communications in the moments that matter.

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Private LTE

Secure, resilient broadband for critical operations

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Safe Utilities

Generate, transmit and deliver energy to customers in an environment built on safety.

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MOTOTRBO™ Ion

Data & voice in a single device

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PMMN4125

RM250 Remote Speaker Microphone with 3.5mm Audio Jack

The RM250 is Motorola Solution’s first wired RSM with a built-in battery, allowing it to be used with MOTOTRBO™ SL Series and WAVE TLK 100 radios. With over 22 hours battery life, you can focus on the project instead of recharging.

Communicate clearly in difficult weather with this Remote Speaker Microphone featuring Windporting technology. Windporting eliminates the whining and howling sounds of wind blowing across your remote speaker microphone while preventing water from clogging the microphone, resulting in clearer transmissions.

Built to survive, this RSM is approved to IP67 meaning it can withstand immersion for 30 minutes and is completely dust-tight.

This RSM also features a 3.5 mm audio jack that allows you to connect a receive-only earpiece for discreet communication.

RM250 Data Sheet

Accessory Info
Compatible Products

PMMN4125

RM250 Remote Speaker Microphone with 3.5mm Audio Jack

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PMMN4125

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PMMN4125

Microphone Characteristics

CE Certified

Intrinsic Safety Rating

IP Rating

Emergency Button

IMPRES Audio

Windporting

Noise cancelling microphone

Volume Control

Programmable Buttons

Earpiece Connector

PMMN4125

Compatible Products

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MOTOTRBO™ SL4000e Smart Two-Way Radios

SL1600 Ultra-slim & Rugged Two-Way Radio

SL2600 Two-way Portable Radio

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PMMN4125

RM250 Remote Speaker Microphone with 3.5mm Audio Jack

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Microphone Characteristics

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/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Intrinsic Safety Rating

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics IP Rating

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Emergency Button

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics IMPRES Audio

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Windporting

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Noise cancelling microphone

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Volume Control

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Programmable Buttons

/content/cq:tags/msi/specifications/product-categories/accessories/two-way-radio-accessories/two-way-radio-audio-accessories/two-way-radio-remote-speaker-microphones/remote-speaker-microphones/microphone-characteristics Earpiece Connector

PMMN4125

Compatible Products

Filter

MOTOTRBO™ SL4000e Smart Two-Way Radios

SL1600 Ultra-slim & Rugged Two-Way Radio

SL2600 Two-way Portable Radio

CE Certified

Intrinsic Safety Rating

IP Rating

Emergency Button

IMPRES Audio

Windporting

Noise cancelling microphone

Volume Control

Programmable Buttons

Earpiece Connector