Panasonic Attune II Operating Guide

Model No.   

WX-CH427

Before attempting to connect or operate this product,

please read these instructions carefully and save this manual for future use.

No model number suffix is shown in this manual.

Printed in China

FSe1213-1014       PGQX1433YA       Imprimé en Chine

 Refer to the Operating Instructions of Belt Pack (or Order Taker) for details on 

connection and so on.

The risk of hearing impairment due to exposure to excessive sound levels may be reduced 
by listening at lower volumes and for shorter durations.



wPreface

Headset WX-CH427 is exclusively designed for use with Belt Pack WX-CT420 or Order Taker 
WX-CT2020, WX-T3020.



wPrecautions



p Do not use this product in the rain. When this product gets wet, wipe the product immediately 

with dry cloth, and dry the product sufficiently before use.



p Do not place this product under high temperatures such as near the heat sources or in the 

car with windows closed.



p Do not try to reshape the head band. Doing so may break the band and/or cause the headset 

to malfunction.



p If the head pad is pulled out with too much force, it may be pulled out of the head band and/

or it may malfunction.



p Do not pull the cable. Doing so may damage the plug area and/or cause the headset to 

malfunction.



p Using the headset without the microphone cover may lead to malfunctioning and shorten the 

headset’s service life.



wLimitation of Liability

THIS PUBLICATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER 
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 
OF MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE, OR NON-
INFRINGEMENT OF THE THIRD PARTY'S RIGHT.



wDisclaimer of Warranty

IN NO EVENT SHALL Panasonic Corporation BE LIABLE TO ANY PARTY OR ANY PERSON, 
EXCEPT FOR REPLACEMENT OR REASONABLE MAINTENANCE OF THE PRODUCT, FOR 
THE CASES, INCLUDING BUT NOT LIMITED TO BELOW:

(1)  ANY DAMAGE AND LOSS, INCLUDING WITHOUT LIMITATION, DIRECT OR INDIRECT, 

SPECIAL, CONSEQUENTIAL OR EXEMPLARY, ARISING OUT OF OR RELATING TO THE 
PRODUCT;

(2)  PERSONAL INJURY OR ANY DAMAGE CAUSED BY INAPPROPRIATE USE OR 

NEGLIGENT OPERATION OF THE USER;

(3)  UNAUTHORIZED DISASSEMBLE, REPAIR OR MODIFICATION OF THE PRODUCT BY 

THE USER;

(4)  ANY PROBLEM, CONSEQUENTIAL INCONVENIENCE, OR LOSS OR DAMAGE, ARISING 

OUT OF THE SYSTEM COMBINED BY THE DEVICES OF THIRD PARTY.



wMaintenance



p Turn off the unit’s power and wipe the surfaces using a soft dry cloth.



p Avoid all contact with benzine, paint thinners and other volatile substances, and avoid using 

these substances.



p When using a chemical cloth for cleaning, read the caution provided with the chemical cloth 

product.



p The headset ear cover, microphone cover and filter are consumables.



p When the headset ear cover has become dirty, replace it with a new one.



p Oil, water, saliva, etc. adhering to the microphone can cause a malfunction. 

If oil, etc. adheres to the filter, replace the microphone cover and filter with new ones.



p Microphone cover



p Filter

Insert the filter.

Use these 2 ribs as 
positioning guides for the 
filter.

microphone with cover removed

Put on the cover with the 
filter attached.

Insert a finger in the groove and 
remove the cover.

Microphone

Groove



wOptional Accessories

Headset Microphone Cover  ..............................K-HMCBULK
Headset Ear Cover  .............................................. K-HEBULK

For details, contact the sales shop where you bought this product.



wTroubleshooting

Consult your sales shop if these measures do not resolve a problem, if symptoms not listed 
here occur, or if you have a question related to engineering. 

Cannot talk and/or 
cannot hear.

Check whether the same symptoms occur when the headset is 
connected to another Belt Pack.
If the problem persists, contact your dealer.



wSpecifications

Type: 

   Dynamic

Impedance: 

  35 

: at 1 kHz

Standard input: 

 

10 mW

Maximum input: 

 

40 mW

Output sound pressure level: 

120 dB SPL at 1 kHz, 10 mW input

Frequency response:   

150 Hz - 6 000 Hz

Type: 

   Omnidirectional 

electret 

condenser 

microphone

Output impedance: 

 

2.2 k

: at 1 kHz

Sensitivity: 

 

 

–44 dB at 1 kHz (0 dB = 1 V/Pa at 1 kHz)

Cord length:   

 

1.1 m {3.6 ft.}

Weight: 

  95 

J {0.21 lbs.}

Input/output plugs: 

 

Combined ø2.5/ø3.5 tip-ring type plug

 

   ø2.5 

plug: 

Microphone

 

   ø3.5 

plug: 

Speaker

Dimensions and weights indicated are approximate.
Specifications are subject to change without notice.