
Please take care when you insert the batteries for the
improper insertion may damage the device.
• Replace all batteries at one time (as simultaneous set). Use only
1.5V AAA alkaline batteries. Use only the size and type of batteries
specified.
• When installing batteries, observe proper +/- polarities. Incorrect
installation of batteries may cause damage to the unit.
• Clean contacts on battery and in battery compartment with a soft,
dry cloth each time you install batteries.
• Batteries are hazardous waste. DO NOT dispose of them together
with household garbage.
• DO NOT dispose of batteries in fire. Batteries may explode or leak.
• Recycle or dispose of properly in
accordance with local, state,
province, and country regulations.
• Keep batteries away from children.
• Batteries are small objects and could
be ingested. If swallowed, contact a
physician at once.
• Remove batteries promptly from the
device when the batteries are depleted.
OPERATING GUIDE
Figure 7. Finger Position
1. With the batteries in the device press the back of the device to
open the clip.
2. Place the finger between the rubber cushions of the clip as shown
in Figure 7 (make sure the finger is in the right position), and then
clip the finger.
3. Press the power button to start measurement.
4. DO NOT move the finger or body during measurement.
5. The measurement information will be shown directly on the display.
6. Long press the button to adjust brightness preference. Choose from
5 levels of brightness. When in Standby mode, a short press of the
button will exit it.
7. Display viewing angle will change automatically according to the
direction of the hand.
Fingernails and the luminescent tube
should be on the same side.
CARE AND MAINTENANCE
• Replace the batteries if the low battery symbol appears on the display,
or when any button is pressed and nothing is displayed on the screen.
• Please clean the surface of the device before using. Wipe the device
with rubbing alcohol first, let it air dry, or clean it using a soft, dry
piece of clean fabric.
• Use rubbing alcohol to disinfect the product after use to prevent
spreading infection between uses.
• Remove batteries when unit is not in use for extended periods of time.
• The packed device can be transported by ordinary conveyance or
according to transport contract. The device cannot be transported
mixed with toxic, harmful, corrosive material.
• Storage environment of the device is -40°F (- 40°C) to +140°F (60°C),
< 95% RH.
High-pressure sterilization cannot be used on the device.
DO NOT immerse the device in liquid.
It is recommended that the device should be kept in a dry
environment.
Humidity may reduce the useful life of the device, or even
damage it.
TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
The SpO
2
and pulse rate
are not displayed normally
1. The finger is not proper-
ly positioned.
2. The user’s SpO
2
is too
low to be detected.
1. Place the finger properly
and try again.
2. Try again. Go to a hos-
pital for a diagnosis if
you are sure the device
works all right.
The SpO
2
and pulse rate
are not displayed stably
1. The finger is not placed
inside deep enough.
2. The finger is shaking or
the user is moving.
1. Place the finger properly
and try again.
2. Keep the user calm.
The device cannot be
turned on
1. The batteries are
drained or almost
drained.
2. The batteries are not
inserted properly.
3. The device is
malfunctioning.
1. Change batteries.
2. Reinstall batteries.
3. Please contact
Consumer Relations.
The display is off suddenly 1. The product will enter
standby mode when no
signal is detected within
5 seconds.
2. The batteries are almost
drained.
1. Normal.
2. Change batteries.
SYMBOLS
SYMBOL DESCRIPTION SYMBOL DESCRIPTION
Type BF WEEE (2002/96/EC)
Refer to instruction
manual/booklet
IP22 Ingress of liquids rank
%SpO
2
The pulse oxygen
saturation(%)
Manufacturer
PRbpm Pulse rate (bpm) Manufacture Date
Full-voltage
Storage and Transport
Temperature limitation
The battery voltage
indication is deficient
(change the battery in
time avoiding the inexact
measure)
Storage and Transport
Humidity limitation
1. No finger inserted
2. An indicator of signal
inadequacy
Storage and Transport
Atmospheric pressure
limitation
Battery positive
electrode
This side UP
Battery negative
electrode
Fragile, handle with care
I. Exit standby mode
2. Change brightness of
the screen
Keep dry
SN Serial number Recyclable
Alarm inhibit
SPECIFICATIONS
DISPLAY INFORMATION DISPLAY MODE
The Pulse Oxygen Saturation(SpO
2
) LCD
Pulse Rate(PR) LCD
Pulse Intensity (bar-graph) LCD bar graph display
Pulse wave LCD
SpO
2
Parameter Specification
Measuring range 0% ~ 100% (the resolution is 1%).
Accuracy 70% ~ 100%: ±2%, below 70%
unspecified.
Optical Sensor Red light (wavelength is 660 nm)
Infrared (wavelength is 905 nm)
Pulse Parameter Specification
Measuring range 30 bpm ~ 250 bpm (the resolution
is 1 bpm)
Accuracy ±2 bpm or ±2% select larger
Pulse Intensity
Range Continuous bar-graph display, the
higher display indicate the stronger
pulse.
Battery Requirement
1.5V (AAA size) alkaline batteries x 2 or rechargeable battery
Battery Life
Up to 20 hours
Dimensions and Weight
Dimensions 2.36"(L) X 1.42"(W) X 1.26"(H)
60(L) X 36(W) X 32(H) mm
Weight About 0.002 lbs (57g) with the batteries
APPENDIX
Guidance and manufacture’s declaration-electromagnetic emission
for all EQUIPMENT and SYSTEMS
GUIDANCE AND MANUFACTURE’S DECLARATION—
ELECTROMAGNETIC EMISSION
The PX-131CO Pulse Oximeter is intended for use in the electromagnetic
environment specified below. The customer or the user of the PX-131CO Pulse
Oximeter should assure that it is used in such an environment.
Emission test Compliance Electromagnetic environment-guidance
RF emissions
CISPR ll
Group 1 The PX-131CO Pulse Oximeter uses RF
energy only for their internal function.
Therefore, its RF emissions are very low
and are not likely to cause any interference
in nearby electronic equipment.
RF emissions
CISPR ll
Class B The PX-131CO Pulse Oximeter is suitable
for use in all establishments,including
domestic establishments and those
directly connected to the public low-voltage
power supply network that supplies
buildings used for domestic purposes.
Harmonic
emissions IEC
61000-3-2
Not
applicable
Voltage
fluctuations/ flicker
emission
IEC 61000-3-3
Not
applicable
Guidance and manufacture’s declaration-electromagnetic immunity
for all EQUIPMENT and SYSTEMS
GUIDANCE AND MANUFACTURE’S DECLARATION —
ELECTROMAGNETIC IMMUNITY
The PX-131CO Pulse Oximeter is intended for use in the electromagnetic
environment specified below. The user of PX-131CO Pulse Oximeter should
assure that it is used in such an environment.
Immunity test IEC60601
test level
Compliance
level
Electromagnetic
environment-guidance
Electrostatic
discharge (EDS)
IEC 61000-4-2
±6KV
contact
±8KV air
±6KV contact
±8KV air
Floors should be wood,
concrete or ceramic tile. If
floors are covered with
synthetic material, the
relative humidity should be
at least 30%.
Power frequency
(50Hz) magnetic
field
IEC 61000-4-8
3A/m 3A/m Power frequency of
magnetic fields should be
at levels characteristic of a
typical location in a typical
commercial or hospital
environment.
Guidance and manufacture’s declaration-electromagnetic immunity
for EQUIPMENT and SYSTEMS that are not LIFE SUPPORTING
GUIDANCE AND MANUFACTURE’S DECLARATION—
ELECTROMAGNETIC IMMUNITY
The PX-131CO Pulse Oximeter is intended for use in the electromagnetic
environment specified below. The customer or the user of PX-131CO Pulse
Oximeter should assure that it is used in such an environment.
Immunity test IEC60601
test level
Compliance
level
Electromagnetic
environment-guidance
Radiated
RF
ICE
61000-4-3
3V/m
80MHz
to
2.5GHz
3V/m
Portable and mobile RF
communication equipment
should be used no closer to
any part of the PX-131CO
Pulse Oximeter, including
cables, than the
recommended separation
distance calculated from the
equation applicable to the
frequency of the transmitter.
Recommended separation
distance
Where P is the maximum
output power rating of the
transmitter in watts (W)
according to the transmitter
manufacturer and d is the
recommended separation
distance in meters (m).
Field strengths from fixed RF
transmitters, as determined
by an electromagnetic site
survey,
a
should be less than
the compliance level in each
frequency range
b
.
Interference may occur in the
vicinity of equipment marked
with the following
symbol:
NOTE 1: At 80MHz and 800MHz, the higher frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects
and people.
a. Field strengths from fixed transmitters, such as base stations for radio (cellular/
cordless) telephones and land mobile radios, amateur radio, AM and FM radio
broadcast and TV broadcast cannot be predicted theoretically with accuracy.
To assess the electromagnetic environment due to fixed RF transmitters,
an electromagnetic site survey should be considered. If the measured field
strength in the location in which The PX-131CO Pulse Oximeter is used
exceeds the applicable RF compliance level above, the PX-131CO Pulse Oxim-
eter should be observed to verify normal operation. If abnormal performance
is observed, additional measures may be necessary, such as reorienting or
relocating the PX-131CO Pulse Oximeter.
b. Over the frequency range 150 KHz to 80 MHz, field strengths should be less
than 3V/m.
Recommended separation distances between portable and mobile
RF communications equipment and the EQUIPMENT or SYSTEM
for EQUIPMENT or SYSTEM that not LIFE-SUPPORTING
RECOMMENDED SEPARATION DISTANCES BETWEEN
PORTABLE AND MOBILE RF COMMUNICATIONS EQUIPMENT
AND THE PX-131CO PULSE OXIMETER
The PX-131CO Pulse Oximeter is intended for use in the electromagnetic
environment in which radiated RF disturbances are controlled The customer
or the user of the PX-131CO Pulse Oximeter can help prevent electromagnetic
interference by maintaining a minimum distance between portable and mobile
RF communications equipment (transmitters) and the PX-131CO Pulse
Oximeter as recommended below, according to the maximum output power
of the communications equipment.
Rated maximum
output power of
transmitter
(W)
Separation distance according to frequency
of transmitter (m)
150 KHz to 80
MHz
80 MHz to
800 MHz
800 MHz to
2.5 GHz
0.01 0.12 0.12 0.23
0.1 0.37 0.37 0.74
1 1.17 1.17 2.33
10 3.69 3.69 7.38
100 11.67 11.67 23.33
For transmitters rated at a maximum output power not listed above, the
recommended separation distanced in meters (m) can be estimated using the
equation applicable to the frequency of the transmitter, where P is the maximum
output power rating of the transmitter in watts (W) according to the transmitter
manufacturer.
NOTE 1: At 80MHz and 800MHz, the separation distance for the higher
frequency range applies.
NOTE 2: These guidelines may not apply in all situations. Electromagnetic
propagation is affected by absorption and reflection from structures, objects
and people.
2-YEAR LIMITED WARRANTY
Homedics sells its products with the intent that they are free of defects in
manufacture and workmanship for a period of 2 years from the date of original
purchase, except as noted below. Homedics warrants that its products will be
free of defects in material and workmanship under normal use and service.
This warranty extends only to Consumers and does not extend to Retailers.
To obtain warranty service on your Homedics product, contact a consumer
relations representative for assistance. Please make sure to have the model
number of the product available.
Homedics does not authorize anyone, including, but not limited to, Retailers,
the subsequent Consumer purchaser of the product from a Retailer or remote
purchasers, to obligate Homedics in any way beyond the terms set forth
herein. This warranty does not cover damage caused by misuse or abuse;
accident; the attachment of any unauthorized accessory; alteration to the
product; improper installation; unauthorized repairs or modifications; improper
use of electrical/power supply; loss of power; dropped product; malfunction
or damage of an operating part from failure to provide manufacturer’s
recommended maintenance; transportation damage; theft; neglect; vandalism;
or environmental conditions; loss of use during the period the product is at
a repair facility or otherwise awaiting parts or repair; or any other conditions
whatsoever that are beyond the control of Homedics.
This warranty is effective only if the product is purchased and operated
in the country in which the product is purchased. A product that requires
modifications or adoption to enable it to operate in any other country than the
country for which it was designed, manufactured, approved and/or authorized,
or repair of products damaged by these modifications is not covered under
this warranty.
THE WARRANTY PROVIDED HEREIN SHALL BE THE SOLE AND EXCLUSIVE
WARRANTY. THERE SHALL BE NO OTHER WARRANTIES EXPRESS OR
IMPLIED INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR
FITNESS OR ANY OTHER OBLIGATION ON THE PART OF THE COMPANY
WITH RESPECT TO PRODUCTS COVERED BY THIS WARRANTY. HOMEDICS
SHALL HAVE NO LIABILITY FOR ANY INCIDENTAL, CONSEQUENTIAL
OR SPECIAL DAMAGES. IN NO EVENT SHALL THIS WARRANTY REQUIRE
MORE THAN THE REPAIR OR REPLACEMENT OF ANY PART OR PARTS
WHICH ARE FOUND TO BE DEFECTIVE WITHIN THE EFFECTIVE PERIOD
OF THE WARRANTY. NO REFUNDS WILL BE GIVEN. IF REPLACEMENT
PARTS FOR DEFECTIVE MATERIALS ARE NOT AVAILABLE, HOMEDICS
RESERVES THE RIGHT TO MAKE PRODUCT SUBSTITUTIONS IN LIEU OF
REPAIR OR REPLACEMENT.
This warranty does not extend to the purchase of opened, used, repaired,
repackaged and/or resealed products, including but not limited to the sale
of such products on internet auction sites and/or sales of such products
by surplus or bulk resellers. Any and all warranties or guarantees shall
immediately cease and terminate as to any products or parts thereof which are
repaired, replaced, altered, or modified, without the prior express and written
consent of Homedics.
This warranty provides you with specific legal rights. You may have
additional rights which may vary from state to state. Because of individual
state regulations, some of the above limitations and exclusions may not apply
to you.
For more information regarding our product line in the USA, please visit:
www.homedics.com.
For service or repair, do not return this
unit to the retailer. Contact Homedics
Consumer Relations:
Phone: 1-800-466-3342
Business Hours: 8:30am-7pm EST,
Monday-Friday
Homedics
®
is a registered trademark of
Homedics, LLC.
©2023 Homedics, LLC. All rights reserved.
IB-PX131COC
X.X.XX.XX.XXX
In USA Distributed by:
Homedics USA, LLC
3000 N Pontiac Trail
Commerce Township, MI 48390
Printed in China
Figure 6.
Battery Installation
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