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PACKAGE CONTENTS

•  Landline Phone Headset
•  

Quick Setup Guide

FEATURES

CONNECTING YOUR HEADSET

1

 Turn down the volume on your headset. 

2

 Plug the 2.5 mm headset cable into the 

headphone jack on your phone.

USING YOUR HEADSET

Place your headset on the top of your head 
(not around the back).

2

 Adjust the boom microphone so that it's 

about 1 inch (2.54 cm) from your mouth and 
off to one side.

Begin talking and adjust the volume to a 

 comfortable 

level.

    

WARNING:

 Extended exposure to high 

volumes when using your headset may result 
in permanent hearing loss.

4

 To mute your conversation, slide the MUTE 

switch.

Before using your new product, please read these instructions to prevent any damage.

Quick Setup Guide  |  

NS-MCHM25/NS-MCHM25-C

Landline Phone Headset

2.5 mm headphone jack

Volume control

Boom microphone

Mute switch

Red = 

Microphone Off (Mute)

Green = 

Microphone On

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