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®

 

Registered trade marks of Little Doctor International (S) Pte. Ltd.

© Little Doctor International (S) Pte. Ltd., 2021

Operating conditions:
 Temperature
  Relative humidity

5ºС ~ 40ºС
<80%  

Storage and transportation environment:
 Temperature
  Relative humidity

-20 ºС ~ 55ºС
< 93%

Net Weight (without batteries)

31g

External dimension

58 (L) х 30 (W) х 34 (H) mm.

Date of manufacturing

Manufacturing Date printed on sticker

Country of Origin

PRC

Symbol Defi nitions:

SYMBOL

DEFINITION

SYMBOL

DEFINITION

Type BF applied part.

Conformity to WEEE Directive

IP22

Protected against dripping water.

Attention

PR bpm

Pulse rate (BPM)

%SpO2

Oxygen saturation 

No SpO2 Alarm

Low power indication 

Storage temperature and relative 
humidity

Serial No.

Date of Manufacture

Follow instructions for use

European Union approval

Authorized representative in the 
European community

Sign of type approval of measuring 
instruments

Manufacturer’s information

DECLARATION

This device complies with EMC (IEC 60601-1-2:2001, CISPR 11/A2:2002 

(Group 1, Class B), IEC 61000-4-2:2001, IEC 61000-4-3:2002, IEC 61000-4-8:2001).

The materials which user can come into contact have no toxicity and no action on tissues, complying with ISO10993-
1,-5,-10.

Manufactured under control and for Little Doctor International (S) Pte. Ltd., 7500A, Beach Road, 11-313 The Plaza 
199591, Singapore. Yishun Central P.O. Box 9293 Singapore 917699. 

Manufacturer: Beijing Choice Electronic Technology Co., Ltd. (Room 4104, №.A12 Yuquan Road, Haidian District, 
100143 Beijing, PRC).

Distributor in Europe: Little Doctor Europe Sp. z o.o., 57G Zawila Street, 30-390, Kraków, Poland 

Sales Offi

  ce phone: +48 12 2684746, 12 2684747, fax: +48 12 268 47 53 

E-mail: [email protected] 

www.LittleDoctor.pl

GUARANTEE

We grant 2 years guarantee on the product commencing on the date purchase. The guarantee only comes info force 
if the data of purchase is confi rmed by the dealer’s stamp and signature on Guarantee Card.

This warranty does not extend to, and will be void in respect of any products which have been subjected to misuse, 
neglect, fi re, improper modifi cation, use in violation of the instructions furnished by us repaired by an unauthorized 
third party.

TROUBLESHOUTING

Problems

Possible reason

Solution

SpO

 or 

PR can not 
be shown 
normally

1. Finger is not plugged 
correctly 
2. Patient’s Oxyhemoglobin 
value is too low to be measured

1. Retry by plugging the fi nger 

2. Measure other patients to make sure that no problem 
exists in the product. Go to a hospital in a timely manner 
for an exact diagnosis.

SpO

 or PR 

is shown 
unstably

1. Finger might not be plugged 
deep enough 
2. Finger is trembling or 
patient’s body is in movement 
status

1. Retry by plugging the fi nger 

2. Try not to move

The Oximeter 
can not be 
powered on

1. Power of batteries might be 
inadequate or not be there 
at all 
2. Batteries might be installed 
incorrectly 
3. The Oximeter might be 
damaged

1. Please replace batteries 

2. Please reinstall the batteries 

3. Please contact with local customer service centre

Indication 
lamps are 
suddenly off 

1. The product is automatically 
powered off  when no signal is 
detected longer than 8 seconds 
2. Power is too low.

1. Normal 

2. Replace the batteries

E595/2111/4_ENG

MD300C23

Name and address of retailer

Serial №

MODEL

Date of Purchase

Purchaser sign

I confi rm that surface appearance 
and complete set of device is OK:

Retailer stamp

Purchaser sign

GUARANTEE CARD

For more information please visit
WWW.LITTLEDOCTOR.SG

LITTLE DOCTOR INTERNATIONAL (S) PTE. LTD.

Yishun Central P.O. Box 9293 Singapore 917699, 
Fax: 65-62342197, E-mail: [email protected]

 EC-Rep: Shanghai  International Holding Gorp. GmbH (Europe).

 Eiff estrasse 80, 20537  Hamburg, Germany.

Beijing Choice Electronic Technology Co., Ltd., 
Room 4104, №.A12 Yuquan Road, Haidian District, 
100143 Beijing, PRC

“Error3” or 
“Error4” 
Displayed on 
screen

1 .Low power 
2. Receiving tube being 
shielded or damaged together 
with broken connector. 
3. Mechanical Misplace for 
receive-emission tube 
4. Amp circuit is malfunction.

1. Change new battery 
2. Please contact with local customer service center 

3. Please contact with local customer service center 

4 Please contact with local customer service center

“Error7” 
displayed on 
screen

1. Low power 
2. Emission tube damaged.

3. Current control circuit is 
malfunction.

1 Change battery 
2 Contact with local customer service center 

3 Contact with local customer service center

ELECTROMAGNETIC COMPATIBILITY

The device conforms to IEC60601-1-2:2014 Electromagnetic Compatibility (EMC) standard.

Essential performance is defi ned as SpO2 accuracy and pulse rate accuracy or an indication of abnormal operation. 
Accuracies may be aff ected as a result of exposure to electromagnetic disturbances that are outside of the environ-
ments listed in the intended use. If issues are experienced, move the device away from the source of electromagne-
tic disturbances.

TABLE 1: ELECTROMAGNETIC EMISSIONS LIMITS AND COMPLIANCE

Emissions Test

Compliance

RF Emissions
CISPR 11

Group 1, Class B

Note: Harmonic Emissions (IEC 61000-3-2), Voltage Flicker Emissions (IEC 61000-3-3) are not applicable.

TABLE 2: ELECTROMAGNETIC IMMUNITY

Immunity Test

Compliance

Electrostatic Discharge (ESD)
IEC 61000-4-2

±8 kV contact
±2 kV, ±4 kV, ±8 kV, ±15 kV air

Rated power Frequency Magnetic Fields
IEC 61000-4-8

30 A/m
50Hz and 60 Hz

Radiated RF
IEC 61000-4-3

80 MHz – 2.7 GHz

10 V/m 80% AM 1kHz

380 – 390 MHz

27 V/m Pulse mod. 18Hz

430 – 470 MHz

28 V/m FM±5Hz deviation 1kHz sine

704 – 787 MHz

9 V/m Pulse mod. 217Hz

800 – 960 MHz

28 V/m Pulse mod. 18Hz

1.7 – 1.99 GHz

28 V/m Pulse mod. 217Hz

2.4 – 2.57 GHz

28 V/m Pulse mod. 217Hz

5.1 – 5.8 GHz

9 V/m Pulse mod. 217Hz

Note: Electrical Fast Transients (IEC 61000-4-4), Surge (IEC 61000-4-5), Voltage dips (IEC 61000-4-11), 
Conducted Immunity (IEC 61000-4-6) are not applicable.

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