MH-100 3.5 mm Earpiece for RSM Audio Jack
Receive-Only Earpiece • 3.5 mm Audio Jack • Plugs Into RSM • Discreet Monitoring • Vertex VX Compatible
The MH-100 3.5 mm Earpiece for RSM Audio Jack is a receive-only earpiece that plugs into the 3.5 mm audio jack on a compatible remote speaker microphone (RSM), directing incoming audio straight to your ear instead of out the speaker. It is built for users who need to keep transmissions private and clear — ideal for monitoring communications, working in high-noise environments, or any setting where discretion matters. Browse the full range of commercial two-way radios and audio accessories at Two Way Radio Gear Canada.
Who It's For
The MH-100 earpiece suits anyone already running a remote speaker microphone with a 3.5 mm audio jack who wants discreet, receive-only audio. Not sure your RSM has the right port? Compare the closely related MH-100 Earpiece for Remote Speaker Mic Audio Jack, or reach our Canadian radio experts to confirm fit before you order.
Key Features
Discreet Receive-Only Audio
Directs incoming audio to your ear instead of broadcasting from the speaker mic, keeping conversations private.
3.5 mm Plug-In
Connects directly to the 3.5 mm audio jack on a compatible remote speaker microphone — no extra adapter needed.
Built for Noisy Settings
Keeps incoming messages audible and intelligible in high-noise environments where a speaker mic alone falls short.
RSM Audio Accessory
Pairs with a remote speaker mic for hands-busy operation, ideal for retail, security, events, and warehouse teams.
Compatible Radios
The MH-100 3.5 mm Earpiece for RSM Audio Jack works with a Vertex Standard remote speaker microphone that features a 3.5 mm audio jack on the head of the mic. It is geared toward Vertex VX-series users, including VX-261 setups. Because it relies on the RSM's 3.5 mm port rather than the radio itself, fit depends on your speaker mic — confirm your RSM has a non-threaded 3.5 mm audio jack before ordering.
If you're unsure which earpiece matches your radio and speaker mic, our Canadian team can help. Call 1-800-984-1534 or contact us, and explore more options in the commercial two-way radios collection.
Ask About Earpiece Compatibility →
Frequently Asked Questions About the MH-100 3.5 mm Earpiece for RSM Audio Jack
• What does the MH-100 3.5 mm Earpiece for RSM Audio Jack do?
It is a receive-only earpiece that plugs into the 3.5 mm audio jack on a compatible remote speaker microphone. It directs incoming audio to your ear instead of broadcasting from the speaker, keeping communications private and clear.
• How does the MH-100 earpiece connect to my radio?
The MH-100 does not plug into the radio directly. It connects to the 3.5 mm audio jack on a compatible remote speaker microphone (RSM), so you need an RSM with that port to use it.
• Which radios is the MH-100 3.5 mm Earpiece compatible with?
It is intended for Vertex VX-series users, including VX-261 setups, paired with a Vertex Standard remote speaker microphone that has a 3.5 mm audio jack. If you're unsure about your specific setup, call 1-800-984-1534 and our Canadian team will confirm fit.
• Can I transmit using the MH-100 earpiece?
No. The MH-100 is a receive-only earpiece, meaning it carries incoming audio only. You transmit using the push-to-talk button on your remote speaker microphone or radio.
