Panasonic WX-CH427 Operating Instructions

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.
ENGLISH VERSION
WARNING:
The risk of hearing impairment due to exposure to excessive sound levels may be reduced
by listening at lower volumes and for shorter durations.
NOTE: Refer to the Operating Instructions of Belt Pack (or Order Taker) for details on
connection and so on.
Preface
Headset WX-CH427 is exclusively designed for use with Belt Pack WX-CT420 or Order Taker
WX-CT2020, WX-T3020.
Precautions
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.
Do not place this product under high temperatures such as near the heat sources or in the
car with windows closed.
Do not try to reshape the head band. Doing so may break the band and/or cause the headset
to malfunction.
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.
Do not pull the cable. Doing so may damage the plug area and/or cause the headset to
malfunction.
Using the headset without the microphone cover may lead to malfunctioning and shorten the
headset's service life.
Limitation 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.
Disclaimer 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.
Maintenance
Turn off the unit's power and wipe the surfaces using a soft dry cloth.
Avoid all contact with benzine, paint thinners and other volatile substances, and avoid using
these substances.
When using a chemical cloth for cleaning, read the caution provided with the chemical cloth
product.
The headset ear cover, microphone cover and filter are consumables.
When the headset ear cover has become dirty, replace it with a new one.
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.

Operating Instructions

Headset
WX-CH427
Model No.
Printed in China
FSe1213-1014 PGQX1433YA Imprimé en Chine
Removing the microphone cover
Microphone
Groove
Headset Microphone Cover [K-HMCBULK (sold separately)] includes a microphone cover
and filter.
Filter
Microphone cover
Insert the filter.
Use these 2 ribs as
positioning guides for the
filter.

Optional Accessories

Headset Microphone Cover ..............................K-HMCBULK
Headset Ear Cover ..............................................K-HEBULK
For details, contact the sales shop where you bought this product.

Troubleshooting

Check the following before requesting repair.
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.
Symptom
Check whether the same symptoms occur when the headset is
Cannot talk and/or
connected to another Belt Pack.
cannot hear.
If the problem persists, contact your dealer.

Specifications

Speaker Section
Type: Dynamic
Impedance: 35
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
Microphone Section
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)
Overall
Cord length: 1.1 m {3.6 ft.}
Weight: 95
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.
Insert a finger in the groove and
remove the cover.
microphone with cover removed
Put on the cover with the
filter attached.
Solution
at 1 kHz
{0.21 lbs.}