1. Introduction
The Motorola Solutions PMLN8342 IMPRES 2-Wire Surveillance Kit is designed for discreet and clear communication in various environments. This accessory integrates advanced IMPRES audio technology, ensuring optimal sound performance and enhanced audio gain when connected to compatible Motorola radios.
This kit features a two-wire design: one wire for receiving audio transmissions through the earpiece, and a second wire incorporating a combined microphone, a programmable button, and a Push-to-Talk (PTT) button. The translucent acoustic tube earpiece is designed for comfort and discretion.

Figure 1: Motorola Solutions PMLN8342 IMPRES 2-Wire Surveillance Kit components.
2. Package Contents
Verify that all items are present in your package:
- Motorola Solutions PMLN8342 IMPRES 2-Wire Surveillance Kit (Headset)
3. Setup
- Compatibility Check: Ensure your radio is compatible with the PMLN8342 kit. This kit is compatible with APX N70, APX N50, and APX N30 series radios.
- Connect to Radio: Locate the audio accessory port on your compatible radio. Insert the 3.5 mm jack of the surveillance kit firmly into the radio's accessory port.
- Position Earpiece: Gently place the translucent acoustic tube earpiece into your ear. Adjust for a comfortable and secure fit. The earpiece is designed for in-ear placement.
- Secure Microphone/PTT: Clip the combined microphone and Push-to-Talk (PTT) unit to your clothing in a convenient location, such as a collar or lapel. Ensure the microphone is positioned to capture your voice clearly.
4. Operating Instructions
The PMLN8342 kit facilitates two-way communication with your radio.
- Receiving Transmissions: Audio from your radio will be transmitted directly to your ear through the translucent acoustic tube earpiece.
- Transmitting Messages (Push-to-Talk - PTT):
- Press and hold the PTT button located on the combined microphone unit.
- Speak clearly into the microphone.
- Release the PTT button to stop transmitting and return to receive mode.
- Programmable Button: The combined microphone unit also includes a programmable button. Refer to your radio's user manual for instructions on how to assign specific functions to this button.
- IMPRES Audio Technology: This kit utilizes IMPRES technology for enhanced audio performance. Ensure your radio is also IMPRES-compatible to fully benefit from features like optimal audio gain and clear communication.
5. Maintenance
- Cleaning: Regularly wipe the earpiece and cables with a soft, damp cloth. Avoid using harsh chemicals or abrasive cleaners.
- Translucent Tube Replacement: The translucent acoustic tube is replaceable. If the tube becomes discolored, damaged, or loses its acoustic clarity, it can be replaced with a genuine Motorola Solutions replacement part. Consult your dealer for replacement procedures and parts.
- Storage: Store the surveillance kit in a clean, dry place away from extreme temperatures and direct sunlight when not in use.
6. Troubleshooting
- No Audio from Earpiece:
- Ensure the 3.5 mm jack is fully inserted into the radio's accessory port.
- Check the radio's volume level.
- Verify the earpiece tube is not kinked or blocked.
- Test the kit with another compatible radio if available.
- Microphone Not Transmitting Clearly:
- Ensure the microphone is positioned correctly and not obstructed.
- Speak directly into the microphone.
- Transmission Delay: If there is a delay between pressing PTT and transmission, ensure you pause briefly after pressing the PTT button before speaking. This allows the radio system to activate the transmission path.
- Earpiece Discomfort:
- Adjust the earpiece position for a better fit.
- Consider if an alternative earpiece tip size might be more comfortable (if available from Motorola Solutions).
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | PMLN8342 |
| Connectivity Technology | Wired |
| Headphones Jack | 3.5 mm Jack |
| Special Feature | 2 Wire design, IMPRES Audio |
| Compatible Devices | APX N70/N50/N30 |
| Cable Length | 30.0 inches |
| Earpiece Shape | Tube (Translucent) |
| Item Weight | 0.81 ounces |
| Manufacturer | Motorola Solutions |
8. Warranty and Support
For information regarding warranty coverage, technical support, or to purchase replacement parts, please contact Motorola Solutions directly or visit their official website.
You may also visit the Motorola Solutions Store on Amazon for additional product information and support resources.





