Description
Heavy-Duty DTMF Hand Microphone for Mobile Radios
Enhance tactical fleet operations with a full keypad mobile microphone engineered for precise digital control.
The Icom HM258T is a commercial-grade mobile hand microphone designed to bring full operational dialing and control straight to the operator's hand. Integrating the Icom HM258T DTMF mobile microphone for F5400D into your mobile radio setup gives public safety, utility, and transportation fleets the ability to handle selective calling, status messaging, and field programming seamlessly. Outfitted with a premium backlit DTMF keypad, this accessory ensures flawless button visibility and accurate tone entry during night shifts or in dimly lit vehicle cabs.
Built for heavy-duty deployment inside commercial trucks, emergency response vehicles, and industrial machinery, this hand microphone features robust IP54-rated ingress protection. The sealed enclosure effectively shields internal acoustic elements against airborne dust accumulation and water splashes from any direction. Equipped with a professional 10-pin mobile connector plug, the Icom HM258T locks securely onto the front accessory port to eliminate accidental disconnection from vehicle vibrations and cable strain.
Key Features & Benefits
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Full Keypad Control: The Icom HM258T DTMF mobile microphone for F5400D incorporates a complete 16-key DTMF pad for manual frequency entry, direct selective dialing, and command controls.
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Integrated Backlighting: Features crisp illumination behind the keys to provide optimal button visibility during nighttime or low-light fleet operations.
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Rugged IP54 Sealing: Built to withstand demanding vehicle environments with specialized dust protection and multi-directional water splash resistance.
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Secure 10-Pin Plug: Designed with a professional 10-pin interface connector that ensures stable electrical contact and resists heavy vehicle vibration.
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High-Grade Coiled Cable: Equipped with a durable, high-flex coiled cord that provides extended reach throughout the vehicle cabin without sagging.
Specifications
| Attribute |
Details |
| Brand |
Icom |
| Model/SKU |
HM258T |
| Keypad Type |
Full 16-Key DTMF |
| Illumination |
Backlit Keys |
| Ingress Sealing |
IP54 Dust and Splash Resistant |
| Connector Type |
10-Pin Mobile Plug |
| Cord Type |
Heavy Duty Coiled Cord |
Compatibility
|
|
|
|
| F5400D |
F6400D |
F7510 |
F7520 |
| F7540 |
What’s Included
| Description |
SKU/Model |
Status |
| DTMF Hand Microphone with Backlit Keypad |
HM258T |
✅ Included |
| Heavy Duty Microphone Hanger Clip |
Standard-Clip |
✅ Included |
| Mobile Vehicle Transceiver Base Unit |
F5400D |
❌ Sold Separately |
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Frequently Asked Questions
How does the backlit keypad help during vehicle operations?
The soft background illumination ensures all 16 keys remain clearly visible in dark or nighttime environments, preventing misdials and speeding up team calling sequences.
What specific protection does the IP54 rating provide?
An IP54 rating means the microphone chassis is sealed against harmful interior dust deposits and protected from multi-directional water splashes, making it reliable for rugged commercial use.
Does this hand microphone use a standard modular RJ45 plug?
No, this specific model features a professional, heavy-duty 10-pin round mobile connector plug engineered exclusively for high-tier compatible mobile radio configurations.
Can I use this accessory to send direct selective calls?
Yes, the integrated full DTMF pad allows operators to manually enter telephone interconnect codes, individual radio IDs, and operational short commands directly from the mic.
Is an external mounting hanger clip included with the item?
Yes, a durable vehicle mounting hanger is supplied in the box to safely secure the hand mic to your vehicle dashboard when it is not actively in use.
What factory warranty applies to this genuine Icom accessory?
This original manufacturer hardware component comes backed by a comprehensive single year coverage tier to protect against technical defects and workmanship failures.
Warranty
1-year manufacturer’s warranty.
