MH-100 3.5 mm Earpiece for Remote Speaker Mic Audio Jack
Receive-Only • 3.5 mm Plug • RSM Audio Jack • Discreet Monitoring • Vertex Compatible
The MH-100 3.5 mm Earpiece for Remote Speaker Mic Audio Jack enables more discreet communications by plugging into the 3.5 mm audio jack on your Vertex standard remote speaker microphone (RSM). This receive-only earpiece directs incoming audio straight to your ear instead of broadcasting it from the speaker mic — ideal for monitoring communications, working in high-noise environments, or keeping incoming audio private. Pair it with a compatible business two-way radio and RSM for clear, low-profile listening.
Who It's For
Built for Vertex Standard users who run an RSM and need private, hands-discreet audio — security, retail, hospitality, and event staff. The MH-100 fits Vertex remote speaker mics with a 3.5 mm audio jack; not sure which RSM you have? Contact our Canadian radio experts or call 1-800-984-1534.
Key Features
Receive-Only Audio
Directs incoming audio to your ear instead of broadcasting it from the speaker mic, keeping conversations private.
3.5 mm RSM Plug
Plugs directly into the 3.5 mm audio jack on a Vertex standard remote speaker microphone — no adapters needed.
Discreet & Low-Profile
Keeps incoming messages private and easy to hear in loud environments where a speaker mic would broadcast openly.
Clear Monitoring
Ideal for monitoring traffic and high-noise environments where you need to catch every incoming transmission.
Compatible Radios
The MH-100 3.5 mm earpiece is designed to work with Vertex Standard radios paired with a standard remote speaker microphone that has a 3.5 mm audio jack. It works with the EVX-261, VX-260 Series, and VX-450 Series. Note that these Vertex Standard radios are commercial licensed radios — a Canadian ISED radio licence may be required for the radio itself, though the earpiece adds no licensing requirements of its own.
Not sure if the MH-100 matches your current RSM or radio? Browse our full range of commercial two-way radios or reach our team at 1-800-984-1534 to confirm compatibility before you order.
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Frequently Asked Questions About the MH-100 3.5 mm Earpiece
• What does the MH-100 3.5 mm earpiece do?
The MH-100 is a receive-only earpiece that plugs into the 3.5 mm audio jack on your Vertex standard remote speaker microphone. It directs incoming audio to your ear instead of broadcasting it from the speaker mic, giving you more discreet, private communications.
• Which radios is the MH-100 earpiece compatible with?
The MH-100 3.5 mm earpiece works with the Vertex EVX-261, VX-260 Series, and VX-450 Series when used with a standard remote speaker microphone that has a 3.5 mm audio jack. See our full lineup of commercial two-way radios or contact us at 1-800-984-1534 to confirm your setup.
• Does the MH-100 earpiece let me talk, or only listen?
The MH-100 is a receive-only earpiece — it is for listening to incoming audio. You transmit using the push-to-talk on your remote speaker microphone, while the MH-100 keeps the incoming audio private in your ear.
• Do I need a licence to use the MH-100 earpiece?
The earpiece itself adds no licensing requirements. However, the Vertex EVX-261, VX-260, and VX-450 Series radios it pairs with are commercial licensed radios, so a Canadian ISED radio licence may be required for the radio. Contact us at 1-800-984-1534 if you have questions about licensing.
• Why use a receive-only earpiece instead of the speaker mic alone?
A receive-only earpiece is ideal when monitoring communications, working in high-noise environments, or when it is important to keep incoming audio private. The MH-100 routes audio discreetly to your ear instead of broadcasting it out loud.
