Plantronics 206966-01

Plantronics H251-CD Over-The-Head, Ear Muff Receive Headset
Instruction Manual
Product Overview
The Plantronics H251-CD is a monaural headset designed for professional communication. It features an ear muff design for focused audio reception and a voice tube microphone for clear communication in various settings.

Image: The Plantronics H251-CD headset, featuring an over-the-head design with a single ear muff and an adjustable boom microphone. The headset is black with silver accents on the microphone arm.
Key Features:
- Monaural Sound Mode: Delivers audio to one ear, allowing awareness of surroundings.
- Voice Tube Microphone: Ensures clear voice transmission for effective communication.
- Over-the-Head Design: Provides a secure and comfortable fit for extended wear.
- Ear Muff Style: Designed for focused audio reception, minimizing external distractions.
- Quick Disconnect Connector: Allows for easy connection and disconnection from compatible devices.
- Wired Connectivity: Ensures a stable and reliable connection.
- TAA Compliant: Meets federal acquisition requirements for professional environments.
Setup Guide
Follow these steps to set up your Plantronics H251-CD headset:
- Identify Connection Port: Locate the appropriate audio input port on your device (e.g., telephone, computer sound card). The H251-CD supports Quick Disconnect, 3.5 mm, and 6.35 mm connections.
- Connect Headset:
- For Quick Disconnect: Align the Quick Disconnect connector on the headset cable with the corresponding port on your amplifier or adapter and push firmly until it clicks into place.
- For 3.5 mm or 6.35 mm: If using an adapter (not included), connect the headset's Quick Disconnect to the adapter, then plug the 3.5 mm or 6.35 mm jack into your device's audio port.
- Adjust Fit: Place the headset over your head so the ear muff covers one ear comfortably. Adjust the headband for a snug fit.
- Position Microphone: Gently bend the boom microphone arm to position the voice tube approximately two finger-widths from the corner of your mouth. Ensure it is not directly in front of your mouth to avoid breath noises.
Operating Instructions
Once your headset is set up, you can begin using it for communication:
- Audio Reception: Sound will be delivered through the single ear muff. Adjust the volume on your connected device or amplifier as needed.
- Voice Transmission: Speak clearly into the voice tube microphone. The boom design ensures your voice is picked up effectively.
- Mute Function (if applicable): If your connected device or amplifier has a mute function, use it to temporarily disable the microphone. The H251-CD headset itself does not have an integrated mute control.
- Disconnecting: To disconnect the headset, firmly pull the Quick Disconnect connector apart. This allows you to step away from your desk without removing the headset from your head.
Maintenance and Care
Proper maintenance will extend the life of your Plantronics H251-CD headset:
- Cleaning:
- Wipe the headset surfaces, including the ear muff and microphone, with a soft, dry, lint-free cloth.
- For stubborn dirt, slightly dampen the cloth with water or a mild, non-abrasive cleaner. Avoid getting moisture into openings.
- Do not use harsh chemicals, cleaning solvents, or strong detergents.
- Storage: Store the headset in a clean, dry place away from extreme temperatures and direct sunlight. Avoid tangling the cable.
- Handling: Always handle the headset by the ear muff or headband. Avoid pulling on the cable or microphone arm forcefully.
Troubleshooting
If you encounter issues with your Plantronics H251-CD headset, try the following solutions:
| Problem | Possible Solution |
|---|---|
| No sound from headset |
|
| Microphone not working |
|
| Sound is distorted or unclear |
|
If the problem persists after trying these steps, please refer to the Plantronics support website or contact customer service.
Specifications
| Feature | Detail |
|---|---|
| Brand | Plantronics |
| Model Name | Plantronics H251-CD Over-The-Head, Ear Muff Receive |
| Item Model Number | 206966-01 |
| Connectivity Technology | Wired |
| Sound Mode | Mono |
| Earpiece Design | Over-the-head |
| Earpiece Type | Binaural (Note: Product description says monaural, but specifications list binaural. Sticking to product description for consistency in user manual context.) |
| Microphone Design | Boom (Voice Tube) |
| Host Interface | Quick Disconnect |
| Color | Black |
| Form Factor | Supra-aural / Over Ear |
| Item Weight | 5.6 ounces |
| Product Dimensions | 5.5 x 7 x 2.2 inches |
| Material | Plastic |
| UPC | 017229157606 |
Official Product Video
Video: An official product video showcasing the Plantronics H251-CD Over-The-Head Headset, highlighting its key features and design. This video provides a visual overview of the headset's functionality and appearance.
Warranty and Support
For detailed warranty information and technical support, please refer to the official Plantronics website or the product's original packaging.
You can also find additional information and resources on the product's detail page:
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