Introduction
Thank you for purchasing the PChero Single-Ear Headset. This headset is designed for use with desk phones featuring an RJ9 connector, offering clear communication and comfort for call center environments, office use, and telephone conferences. It includes a noise-cancelling microphone and convenient in-line controls. Please read this manual carefully to ensure proper setup and operation.
Product Overview
The PChero HS012-BC-JP headset combines essential features for efficient and comfortable communication:
- Mute and Volume Control: The headset features an in-line control switch for easy access to microphone mute and volume adjustment. This allows users to quickly manage audio levels and mute the microphone during calls or conferences, indicated by an external mute button with an indicator.
- Comfortable Design: Designed for comfort, this ultra-lightweight wired RJ9 office phone headset features an adjustable headband to fit various head sizes. Soft, high-quality artificial leather ear cushions provide comfort for extended wear.
- Wide Compatibility: This headset is compatible with a wide range of desk phone models from brands including Hitachi, NEC, Toshiba, Fujitsu, Oki Electric, Avaya, Plantronics, Polycom, Zultys, and Gigaset. Specific NEC models supported include Aspire Electra Elite IPK, Dterm Series i (DSX, DTL, DTP, DTR, DTU, DT300, DT310, DT330, DT700, DT730, DT750), and Dterm Series E (DTU-8, DTU-8D, DTU-16, DTU-16D, DTU-32, DTU-32D, DTP-8, DTP-8D, DTP-16, DTP-16D, DTP-32, DTP-32D, DTH-8, DTH-8D, DTH-16, DTH-16D, DTH-32, DTH-32D).
- Noise-Cancelling Microphone: The headset features a 330° rotatable noise-cancelling microphone designed to minimize ambient background noise, ensuring clear voice transmission. The flexible microphone arm allows for precise positioning, and the adjustable headband ensures a comfortable and secure fit for various head sizes, even during extended use.
- Clear Audio: This 4-pin RJ9 desk phone headset delivers clear, wideband audio for natural conversations. Its noise-cancelling microphone reduces background distractions, and an acoustic shock protection circuit safeguards your hearing.




Setup Instructions
- Connect the Headset: Plug the RJ9 connector of the headset into the corresponding RJ9 port on your desk phone. This port is typically labeled for a headset or handset.
- Use the 8-Channel Adapter (if necessary): If you can hear the other party but they cannot hear you, or if the audio quality is poor, you may need to adjust the compatibility setting using the included 8-channel adapter.
- Adjust Adapter Channel: Connect the headset to the adapter, then connect the adapter to your phone's RJ9 interface. Locate the small switch on the side of the adapter. This switch allows you to select one of 8 different circuit configurations. Try each setting (1 through 8) until you find the one that provides clear two-way communication.
- Position the Microphone: Adjust the flexible microphone arm so that the microphone is positioned approximately 1-2 inches from your mouth for optimal voice pickup. The microphone arm can rotate 330 degrees.
- Adjust Headband: Extend or retract the headband to ensure a comfortable and secure fit on your head.

Operating Instructions
- Making/Receiving Calls: Once connected and configured, use your desk phone as usual. Audio will be routed through the headset.
- Volume Adjustment: Use the volume control switch located on the in-line control unit to increase or decrease the listening volume.
- Mute Function: Press the mute button on the in-line control unit to temporarily silence your microphone. An indicator light will typically show when the microphone is muted. Press it again to unmute.
- Microphone Positioning: For the best sound quality, ensure the microphone is positioned close to your mouth. The flexible arm allows for easy adjustment.
Maintenance
- Cleaning: Wipe the headset gently with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the headset in a clean, dry place away from extreme temperatures and direct sunlight.
- Cable Care: Avoid sharp bends or excessive pulling on the cable to prevent damage.
- Ear Cushions: Periodically check ear cushions for wear and tear. Replace if necessary to maintain comfort and hygiene.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from headset / Cannot hear caller | Incorrect connection; Volume too low; Phone settings. | Ensure RJ9 plug is fully inserted. Increase volume using in-line control. Check your desk phone's audio settings. |
| Microphone not working / Caller cannot hear me | Microphone muted; Incorrect adapter channel; Incompatibility. | Ensure microphone is not muted. Use the 8-channel adapter and cycle through settings (1-8) to find the correct one for your phone. Reposition microphone closer to your mouth. |
| Poor audio quality / Echo | Incorrect adapter channel; Loose connection; Phone settings. | Adjust the 8-channel adapter setting. Ensure all connections are secure. Check your phone's audio settings for echo cancellation. |
| Headset is uncomfortable | Improper fit. | Adjust the headband and microphone arm for a better fit. The headset is designed to be lightweight for extended use. |
Specifications
- Brand: PChero
- Model Name: HS012-BC-JP
- Color: Black
- Headphone Form Factor: On-Ear (Single-Ear)
- Connectivity Technology: Wired
- Connector Type: RJ9 (4-pin)
- Microphone: Noise-Cancelling, 330° Rotatable
- Controls: In-line Mute Button, Volume Adjustment Switch
- Included Components: Headset, 8-Channel Adapter
Warranty and Support
This PChero headset comes with a 2-year warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
For technical support, warranty claims, or any questions regarding your product, please contact PChero customer service through the retailer's platform or visit our official website for contact information. Please have your model number (HS012-BC-JP) and proof of purchase ready when contacting support.