A Simple Guide to Choosing the Best Remote Speaker Microphone for your Needs
IP67 Ultra Controller Speaker Microphone (CSM) and Ultra RSM: Both are built for harsh, highly demanding environments
If your job requires you to deal with fire, heavy machinery or unpredictable weather, then this is the go-to RSM. Great for users who need outstanding performance in the toughest conditions.
Recommended Use Cases:
- Firefighters
- Public order workers
- Mining workers
- Industrial workers
- Airport personnel
Operational Advantages:
- Rugged design, IP67-rated for dust and dirt, and Water Porting®.
- Features magnetic shielding technology that prevents magnetic particles, such as iron ore dust, from sticking to the speaker, ensuring users experience clear, precise audio quality every time.
- Built with a protected front and side Push-to-Talk (PPT) buttons, and a top-facing emergency button for quick, intuitive use, even when wearing gloves, or under protective clothing, using blind feel. Other keys on the device are configurable softkeys.
- Rotary talkgroup control (CSM model), making channel switching fast and easy.
- Tough flame-retardant casing meeting the UL-94 V-0 flammability standard.
- Coloured bezels help teams identify their devices at a glance, and PTT extenders make it easier to find when wearing protective clothing.
- Works with Nexus headsets (standard or Peltor) and connects to Sepura radios via the Rugged Accessory Connector (RAC).
- A strobe LED activates when the alarm button is pressed, helping locate users in distress in low light conditions.
- Belt Clip or Klick Fast stud option enables easy attachment to uniforms.
IP67 Standard RSM (sRSM): Lightweight but tough for everyday field work
For those in light industrial roles, public safety or commercial work, the IP67 sRSM strikes the perfect balance between durability and comfort. Ideal for those who want a dependable, lightweight RSM that fits a variety of roles.
Recommended Use Cases:
- Public safety users
- Light-to-heavy industrial teams
- Commercial field workers
Operational Advantages:
- Two cable lengths available. Pick the one that suits your uniform or equipment layout.
- IP67-rated and Water Porting® technology keeps audio clear even during heavy rain.
- Optional dust guard helps protect against iron particles in mining and industrial environments.
- Three configurable softkeys for quick access to users’ most-used functions.
- Sealed 3.5mm jack for ear hanger or earpiece connectivity.
- Belt Clip or Klick Fast stud option enables easy attachment to uniforms.
Mini RSM (mRSM): Compact, discreet and powerful
Despite its compact size, the mRSM delivers powerful audio performance, making it an ideal choice for users who require reliable communication in a streamlined, lightweight design. Best suited for users who need a balance of portability and performance.
Recommended Use Cases:
- Office and managerial workers
- Public safety users
- Commercial field users
- Industrial settings where space and weight matter
Operational Advantages:
- Small and lightweight, but still tough with IP67 protection.
- Tactile PTT and familiar emergency buttons placement, making it easier to find, even in low light.
- 2W speaker with Water Porting® ensures clear audio in all conditions.
- Perfect for limited space on uniforms due to being a smaller design.
- Belt Clip or Klick Fast stud option enables easy attachment to uniforms.
Which RSM is Best Suited to your Requirements?
Audio profiles enable users to configure and switch between customised audio settings for the same accessory, RSMs, in this case, adapting to various environments. Given the variability in accessory design and fit, fine-tuning audio parameters is essential for optimal performance. These profiles enable automatic detection and adjustment based on the connected device, ensuring clear communication and safe volume levels whether in a noisy stadium or a quiet office.
As well as audio profiles, the table below outlines a detailed comparison of the features across Sepura’s RSM range.
| IP67 Ultra CSM/RSM | IP67 sRSM | mRSM | |
|---|---|---|---|
| Best for | Harsh, High-risk jobs | Industrial, Public Safety | Discreet, Mobile field use |
| Size | Large, Rugged | Medium, Lightweight | Compact, Small |
| PTT / Emergency Button | Front and side PTT / Yes | Yes / Yes | Yes / Yes |
| Water Protection | IP67 + Water Porting® | IP67 + Water Porting® | IP67 + Water Porting® |
| Cleaning | Can be cleaned using a 70% IPA solution, using a Clinell wipe and/or under running water | Can be cleaned using a 70% IPA solution, using a Clinell wipe and/or under running water | Can be cleaned using a 70% IPA solution, using a Clinell wipe and/or under running water |
| Features | Flame-retardant casing, Rotary control (CSM), Sealed Nexus connector, Sealed 3.5mm socket, Headset support, Programmable softkeys, Emergency LED, Belt clip attachment, Optional Klick Fast stud attachment | Sealed 3.5mm socket, Softkeys, Belt clip attachment, Optional Klick Fast stud attachment | Small size, Sealed 3.5mm jack, 2W speaker, Perfect for space-saving, Belt clip attachment, Optional Klick Fast stud attachment |
| Optional Extras | Heavy-duty shirt clip, Heavy-duty belt clip, PTT bezels, PTT extender | Dust guard |
Summary: Matching the Right RSM to your Operational Requirements
Selecting the appropriate RSM begins with a clear understanding of your working environment and communication needs:
- For high-noise or harsh conditions, the IP67 Ultra CSM and RSM provide maximum durability and reliable performance under the most challenging circumstances.
- For versatile, everyday use across various operational settings, the IP67 sRSM offers flexibility, ease of use and robust functionality.
- For compact and discreet communication needs, the mRSM delivers powerful audio performance in a lightweight, portable design, ideal for mobile or lower-profile roles.
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