User's Manual

ManualsBrandsEDAN INSTRUMENTS ManualsElectronicsUltrasonic Pocket Doppler

Size:

Length*Width* Height: (48±1) mm× (39±1) mm× (145±3 ) mm

Weight:

<200g(including batteries)

LCD:

Size:

1.3 inch，23.4 mm ╳ 23.4 mm

Resolution：

240╳240(Pixels)

Coupling

Gel:

pH: 5.5~8.0

Acoustic Impedance: 1.5x10

Pa.s/m ~1.7x10

Pa.s/m (35°C/95ºF )

Environment

Working:

Temperature:+5°C ~ +40°C ( +41ºF ~ +104ºF)

Humidity:15% RH ~ 95% RH(non-condensing)

Atmospheric Pressure:70 kPa ~ 106 kPa

Transport and Storage:

Temperature:-25°C ~ +70°C (-13ºF ~ +158ºF)

Humidity:15% RH ~ 95% RH (non-condensing)

Atmospheric Pressure:70 kPa ~106 kPa

Note: The time required for the Doppler to warm from the minimum storage temperature between uses

until it is ready for intended use is at least 2 hours; the time required for the Doppler to cool from the

maximum storage temperature between uses until it is ready for intended use is at least 2 hours

Performance Specifications

FHR (Essential

Performance):

FHR Measuring Range: 30 bpm ~ 240 bpm

Accuracy: ±2 bpm

Note: FHR measurement result may not be accurate if the equipment is

measuring beyond its measuring range.

FHR Resolution:

1bpm

Audio Output:

Output Power: 2w

Background noise: <45dBA

Overall Sensitivity:

>90dB

Auto Power-off:

Power off when the Doppler receives no signal or operation for 1

minute.

Bluetooth:

TransmissionRange (Without Obstacles) :> 5m (Indoor range depends

on the building’s structure and material.)

Intelligent Denoising

Noise generated in static state＜100mV

Shock Resistance

Withstands a 1.3 m drop at least 6 times to concrete surface with

possible cosmetic damage only

Ultrasound:

Frequency: (3.0±10%) MHz; (2.0±10%) MHz

p_<1 MPa

Iob<10 mW/cm

Ispta<100 mW/cm

Isata<10 mW/cm

Isppa.3<190 W/cm

Ispta.3<94 mW/cm

Effective Radiating Area: 490mm

± 15%

Ultrasound output power：<49mW

Working Mode: pulse wave

Pulse wave repetition rate:5KHz (±5%)

Pulse wave duration:75µs (±5%)

SpO2:

◆ Measurement range:70%~100%

◆ Resolution:1%

◆ Accuracy:±2%

SpO2 Sensor:

◆ Red light:660nm

◆ Infrared light:905 nm

◆ Wave length：about660nmand 900nm

◆ Emitted light energy：<15mW

PR:

◆ Measurement range:30~240bpm

◆ Resolution:1bpm

◆ Accuracy:±2bpm or ±3%,whichever is greater

Battery Specifications

Specification:

◆ Two AA alkaline batteriesTwo AA rechargeable NI-MH batteries

Working Duration:

◆≥4h

Bluetooth Specifications

Modulation:

GFSK π /4-DQPSK 8DPSK

Frequency:

2400-2483.5MHz

Tolerance Frequency:

≤ 20ppm

RF output power:

≤ 20dBm (EIRP)

Occupied Channel Bandwidth:

≤ 2MHz

Transmitter Unwanted Emissions:

≤﹣30dBm

Low Output Summary Table

(For systems whose global maximum valuedoes not exceed 1.0)

System: SD2 Ultrasonic Pocket Doppler

Model (MHz)

spta.3

(mW/cm

)

TI Type

TI Value

sppa.3

(W/cm

)

SD2 CD3.0

3.25

TIS

0.032

0.01

0.009

TIB

0.11

SD2 CD2.0

4.21

TIS

0.028

0.013

0.012

TIB

0.086

⚫ Ordering Information

CAUTION

Only the parts supplied by the manufacturershould be used with the Doppler.

Parts

Part Number

Parts

Part Number

SD2 Doppler

02.06.263378

SD2 Lite Doppler

02.06.263382

SD2 Pro Doppler

02.06.263379

Rechargeable NI-MH

battery

21.21.064180

SD2 Plus Doppler

02.06.263380

AA Alkaline Battery

01.21.064086

SD2 Basic Doppler

02.06.263381

Zipper bag

01.56.466428

⚫ Ultrasound Intensity and Safety

Ultrasound in Medicine

The use of diagnostic ultrasound has proved to be a valuable tool in medical practice. Given its known

benefits for non-invasive investigations and medical diagnosis, including investigation of the human fetus,

the question of clinical safety with regards to ultrasound intensity arises.

There is no easy answer to the question of safety surrounding the use of diagnostic ultrasound

equipment. Application of the ALARA (As Low As Reasonably Achievable) principle serves as a

rule-of-thumb that will help you to get reasonable results with the lowest possible ultrasonic output.

The American Institute of Ultrasound in Medicine (AIUM) states that given its track record of over 25

years of use and no confirmed biological effects on patients or instrument operators, the benefits of the

prudent use of diagnostic ultrasound clearly outweigh any risks.

Ultrasound Safety and the ALARA Principle

Ultrasound waves dissipate energy in the form of heat and can therefore cause tissue warming. Although

this effect is extremely low with Doppler, it is important to know how to control and limit patient exposure.

Major governing bodies in ultrasound have issued statements to the effect that there are no known

adverse effects from the use of diagnostic ultrasound, however, exposure levels should always be limited

to As Low As Reasonably Achievable (the ALARA principle).

Explanation of MI/TI

MI (Mechanical Index)

Cavitations will be generated when ultrasound wave passes through and contacts tissues, resulting in

instantaneous local overheating. This phenomenon is determined by acoustic pressure, spectrum, focus,

transmission mode, and factors such as states and properties of the tissue and boundary. This

mechanical bioeffect is a threshold phenomenon that occurs when a certain level of ultrasound output is

exceeded. The threshold is related to the type of tissue. Although no confirmed adverse mechanical

effects on patients or mammals caused by exposure at intensities typical of present diagnostic

ultrasound instruments have ever been reported, the threshold for cavitation is still undetermined.

Generally speaking, the higher the acoustic pressure, the greater the potential for mechanical bioeffects;

the lower the acoustic frequency, the greater the potential for mechanical bioeffects.

The AIUM and NEMA formulate mechanical index (MI) in order to indicate the potential for mechanical

effects. The MI is defined as the ratio of the peak-rarefactional acoustic pressure (should be calculated

by tissue acoustic attenuation coefficient 0.3 dB/cm/MHz) to the acoustic frequency.

MI = Pr, α

fawf ×CMI

CMI = 1 (MPa / MHz )

TI (Thermal Index)

Heating of tissues is caused by absorption of ultrasound when the ultrasound energy is applied. The

temperature rise is determined by the acoustic intensity, exposed area and thermophysical properties of

the tissue.

In order to indicate the potential for temperature rise caused by thermal effects, the AIUM and NEMA

formulate thermal index (TI). It is defined as the ratio of the total acoustic power to the acoustic power

required to raise the tissue temperature by 1ºC (1.8°F).

According to different thermophysical properties of the tissue, TI is divided into three kinds: TIS, TIB and

TIC.

TIS (Soft Tissue Thermal Index): It provides an estimate of potential temperature rise in soft or similar

tissues.

TIB (Bone Thermal Index): It provides an estimate of potential temperature rise when the ultrasound

beam passes through soft tissue and a focal region is in the immediate vicinity of bone.

TIC (Cranial Bone Thermal Index): It provides an estimate of potential temperature rise in the cranial

bones or superficial bones.

Measurement Uncertainties

The uncertainties in the measurements were predominantly systematic in origin; the random

uncertainties were negligible in comparison. The overall systematic uncertainties were determined as

follows:

1. Hydrophone Sensitivity: ± 12 percent for intensity, ± 6 percent for pressure. Based on the

hydrophone calibration report by ONDA. The uncertainty was determined within ±1 dB in frequency

range 1-15 MHz.

2. Digitizer: ±0.3 percent for intensity. ± 0.15 percent for pressure.

Based on the stated accuracy of the 8-bit resolution of the Agilent DSO6012 Digital Oscilloscope

and the signal-to-noise ratio of the measurement.

3. Temperature:±2.4 percent for intensity uncertainty, ±1.2 percent for pressure uncertainty.

Based on the temperature variation of the water bath of ± 1ºC (1.8°F).

4. Spatial Averaging: ± 3.5 percent for intensity, ± 1.75 percent for pressure.

5. Non-linear Distortion: N/A.

No effects of nonlinear propagation were observed.

Since all the above error sources are independent, they may be added on an RMS basis, giving a

total uncertainty of ± 12.73 percent for all intensity values reported, ± 6.37 percent for all the pressure

values,,± 12.6 percent for the Mechanical Index, uncertainty of ±12.73% percent for power,±0.15 percent

for center frequency, ±6 .87% for the MI.

Prudent Use Statement

Although no confirmed bioeffects on patients caused by exposure from present diagnostic ultrasound

equipment have ever been reported, the potential exists that such bioeffects may be identified in the

future. Therefore, the ultrasound should be used prudently. High levels of acoustic output and long

exposure time should be avoided while acquiring necessary clinical information.

Acoustic Output Reporting Table for Track 1 Acoustic output reporting table for

IEC60601-2-37 (IEC60601-2-37, Edition 2.1, 2015-0, table 201.103)

Transducer Model: SD2, Operating Mode: PW mode

Index label

TIS

TIB

TIC

Surface

Below

Surface

surface

Below

Surface

Maximum index value

0.013

0.028

0.086

N/A

Index component value

N/A

0.028

0.086

Acoustic

Parameters

pr.αat zMI

(MPa)

0.019

P (mW)

8.62

N/A

P1x1 (mW)

N/A

zs (cm)

5.12

zb (cm)

4.97

zMI (cm)

0.50

zPII.α(cm)

.α

0.50

fawf (MHz)

2.00

3.00

N/A

Other

information

prr (Hz)

4999.00

srr (Hz)

N/A

npps

N/A

Ipa.α at zPII.α

(W/cm2)

0.012

Ispta.α at zPII.α

zSII.α(mW/cm2)

4.21

Ispta at zPII or

zSII (mW/cm2)

4.67

pr. at zPII

(MPa)

0.020

Operating control conditions

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

2.00

N/A

2.00

N/A

2.00

N/A

Transducer Model: SD2, Operating Mode: PW mode

Index label

TIS

TIB

TIC

Surface

Below

Surface

surface

Below

Surface

Maximum index value

0.011

0.032

0.11

N/A

Index component value

N/A

0.032

0.11

Acoustic

Parameters

pr.αat zMI

(MPa)

0.019

P (mW)

10.96

N/A

P1x1 (mW)

N/A

zs (cm)

4.65

zb (cm)

4.55

zMI (cm)

0.50

zPII.α (cm)

.α

0.50

fawf (MHz)

3.00

N/A

Other

information

prr (Hz)

4999.00

srr (Hz)

N/A

npps

N/A

Ipa.α at zPII.α

(W/cm2)

0.0090

Ispta.α at zPII.α

zSII.α(mW/cm2)

3.25

Ispta at zPII or

zSII (mW/cm2)

3.72

pr. at zPII

(MPa)

0.021

Operating control conditions

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

Fixed

N/A

3.00

N/A

3.00

N/A

3.00

N/A

Standard Parameter Equal Contrast List

IEC60601-2-37 Standard Parameters

Parameter

Note

Parameter

Note

r.α

Attenuated

Peak-rare-factional

Acoustic Pressure

awf

Center Frequency, Acoustic

Working Frequency

Peak-rare-factional

Acoustic Pressure

-12dB Output Beam Dimensions

Output Power

Depth for Soft Tissue

Thermal Index

Pulse Duration

)

Attenuated Output Power

prr

Pulse Repetition Frequency

(Pulse Repetition Rate)

ta.α

)

Attenuated

Temporal-average Intensity

Equivalent Beam Diameter

Break-point Depth

pi.α

at max

Attenuated Pulse-average

Intensity at the point of Maximum

Depth for Bone Thermal

Index

aprt

-12dB Output Beam Area

pi.α

Attenuated Pulse-intensity

Integral

Mechanical Index

Pulse-intensity Integral

TIS

Soft Tissue Thermal Index

)

Equivalent Beam Diameter

at the point of Z

TIB

Bone Thermal Index

TIC

Cranial-bone Thermal Index

⚫ EMC Information

Electromagnetic Emissions

Guidance and manufacturer’s declaration – electromagnetic emission

The SD2 Ultrasonic Pocket Doppler is intended for use in the electromagnetic environment

specified below. The customer or the user of the device should assure that it is used in such an

environment.

Emission test

Compliance

Electromagnetic environment - guidance

RF emissions

CISPR 11

Group 1

The SD2Ultrasonic Pocket Doppler uses RF energy only

for its internal function. Therefore, its RF emissions are

very low and are not likely to cause any interference in

nearby electronic equipment.

RF emission

CISPR 11

Class B

The SD2 Ultrasonic Pocket Doppler 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/EN61000-3-2

Not

applicable

Voltage fluctuations

/flicker emissions

IEC/EN61000-3-3

Not

applicable

Electromagnetic Immunity

Guidance and manufacture’s declaration–electromagnetic immunity

The SD2 Ultrasonic Pocket Doppler is intended for use in the electromagnetic environment

specified below. The customer or the user of the device should assure that it is used in such an

environment.

Immunity test

IEC 60601 test level

Compliance

level

Electromagnetic

environment-guidance

Electrostatic

discharge (ESD)

IEC 61000-4-2

8 kV contact

2 kV，4 kV，8 kV

15 kV air

8 kV

contact

2 kV，4

kV，8 kV

15 kV air

Floors should be wood,

concrete or ceramic tile.

If floor are covered with

synthetic material, the

relative humidity should

be at least 30%.

Electrical Fast

Transient/Burst

IEC/EN61000-4-4

±2kV forpower

supplylines

±1kV forinput/outputlines

Not

applicable

Not applicable

Surge

IEC/EN61000-4-5

± 1 kV line(s) toline(s)

± 2 kV line(s) to earth

Not

applicable

Not applicable

Voltage dips, short

interruptions, and

voltage variations

on power supply

input lines

IEC/EN61000-4-11

<5%UT(>95% dip inUT)

for 0.5cycle

40%UT(60%dip in UT)

for5 cycles

70%UT(30%dip in UT)

for25 cycles

<5%UT(>95% dip inUT)

for 5s

Not

applicable

Not applicable

Power frequency

(50Hz/60Hz)

magnetic field

IEC61000-4-8

30 A/m

Power frequency

magnetic fields should

be at levels

characteristic of a typical

location in a typical

commercial or hospital

environment.

Electromagnetic Immunity

Guidance and manufacture’s declaration – electromagnetic immunity

The SD2 Ultrasonic Pocket Doppler is intended for use in the electromagnetic environment

specified below. The customer or the user of the device should assure that it is used in such an

environment.

Immunity test

IEC 60601 test

level

Compliance

level

Electromagnetic

environment-guidance

Conducted RF

IEC61000-4-6

Radiated RF

IEC61000-4-3

Immunity to

Proximity fields

from RF

wireless

communications

equipment IEC

61000-4-3

3 V

rms

150 kHz ~ 80

MHz

6Vrmsc)in ISM

bands between

0,15 MHz and

80 MHz

10V/m

80 MHz ~ 2.7

GHz

See Table -Test

specifications

for

ENCLOSURE

PORT

IMMUNITY to

RF wireless

communications

equipment

for test level

Not Applicable

10 V/m

80 MHz to 2.7

GHz

See Table-Test

specifications

for

ENCLOSURE

PORT

IMMUNITY to

RF wireless

communications

equipment

for test level

Portable and mobile RF

communications equipment should

be used no closer to any part of the

SD2 Ultrasonic Pocket Doppler,

including cables, than the

recommended separation distance

calculated from the equation

applicable to the frequency of the

transmitter.

Recommended separation

distance:

d = 0.35 P

80 MHz to 800

MHz

d = 0.7 P

800 MHz to 2.7

GHz

d = 6 P/E

at RF wireless

communications equipment bands

(Portable RF communications

equipment (including peripherals

such as antenna cables and

external antennas) should be used

no closer than 30 cm (12 inches) to

any part of the SD2 Ultrasonic

Pocket Doppler, including cables

specified by the manufacturer).

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,

should be less than the compliance

level in each frequency range.

Interference may occur in the

vicinity of equipment marked with

the following symbol:

NOTE 1:At 80 MHz and 800 MHz, 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.

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 SD2 Ultrasonic Pocket Doppler is used

exceeds the applicable RF compliance level above, the SD2Ultrasonic Pocket Doppler should

be observed to verify normal operation. If abnormal performance is observed, additional

measures may be necessary, such as reorienting or relocating the SD2 Ultrasonic Pocket

Doppler.

Over the frequency range 150 kHz to 80 MHz, field strengths should be less than 3 V/m.

The ISM (industrial, scientific and medical) bands between 0,15 MHz and 80 MHz are 6,765 MHz

to6,795 MHz; 13,553 MHz to 13,567 MHz; 26,957 MHz to 27,283 MHz; and 40,66 MHz to 40,70

MHz. The amateur radio bands between 0,15 MHz and 80 MHz are 1,8 MHz to 2,0 MHz, 3,5

MHz to 4,0 MHz, 5,3 MHz to 5,4 MHz, 7 MHz to 7,3 MHz, 10,1 MHz to 10,15 MHz, 14 MHz to

14,2 MHz, 18,07 MHz to 18,17 MHz,21,0 MHz to 21,4 MHz, 24,89 MHz to 24,99 MHz, 28,0 MHz

to 29,7 MHz and 50,0 MHz to 54,0 MHz.

Table-Test specifications for ENCLOSURE PORT IMMUNITY to RF wireless communications

equipment

Test

Frequenc

y (MHz)

Brand

(MHz)

Service

Modulatio

Maximu

Power(W

)

Dista

nce

(m)

IMMUN

ITY

TEST

LEVEL

(V/m)

385

380-390

TETRA 400

Pulse

modulation

18Hz

1.8

0.3

450

430-470

GMRS 460,

FRS 460

±5 kHz

deviation

1kHz sine

0.3

710

704-787

LTE Brand 13,

Pulse

modulation

217 Hz

0.2

0.3

745

780

810

800-960

GSM

800/900,TETR

A 800, iDEN

820, CDMA

850, LTE Band

Pulse

modulation

18 Hz

0.3

870

930

1720

1700-199

GSM 1800;

CDMA 1900;

GSM 1900;

DECT; LTE

Band 1, 3,

4,25;UMTS

Pulse

modulation

217 Hz

0.3

1845

1970

2450

2400-257

Bluetooth,

WLAN,802.11

b/g/n, RFID

2450, LTE

Brand 7

Pulse

modulation

217 Hz

0.3

5240

5100-580

WLAN 802.11

a/n

Pulse

modulation

217 Hz

0.2

0.3

5500

5785

Note: If necessary to achieve the IMMUNITY TEST LEVEL, the distance between the transmitting

antenna and the ME EQUIPMENT or ME SYSTEM maybe reduce to 1m. The 1 m test distance is

permitted by IEC 61000-4-3.

a) For some services, only the uplink frequencies are included.

b) The carrier shall be modulated using a 50% duty cycle square wave signal.

c) As an alternative FM modulation, 50% pulse modulation at 18 Hz may be used because while it

does not represent actual modulation, it would be worst case

Recommended Separation Distances

Recommended separation distances between portable and mobile RF

communications equipment and theSD2 Ultrasonic Pocket Doppler

The SD2 Ultrasonic Pocket Doppleris intended for use in an electromagnetic environment in

which radiated RF disturbances are controlled. The customer or the user of theSD2 Ultrasonic

Pocket Doppler can help prevent electromagnetic interference by maintaining a minimum distance

between portable and mobile RF communications equipment (transmitters) and the SD2

Ultrasonic Pocket Doppleras 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

d = 1.2 P

80 MHz to 800 MHz

d = 0.35 P

800 MHz to

2.7 GHz

d = 0.7 P

0.01

0.035

0.07

0.1

0.11

0.22

0.35

0.7

1.11

2.21

100

3.5

For transmitters rated at a maximum output power not listed above, the recommended separation

distance d 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 80 MHz and 800 MHz, 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.

⚫ Troubleshooting

Problem

Possible Cause

Solution

Fail to power

on, or shut

down shortly

after switching

Battery level is very low.

Replace the batteries or charge

the rechargeable NI-MH batteries

Battery is not installed properly.

Re-install the battery.

Fail to switch on the Doppler as

instructed.

Touch the On/Off touch key for a

while to power on the Doppler.

The Doppler has malfunctions.

Contact service personnel.

Loudspeaker

does not work.

Sound volume has been turned down

to the lowest level.

Adjust sound volume to

appropriate level.

If the Doppler is configured with

Bluetooth, fetal heart sound can be

played by mobile phone.

Set to play fetal heart sound by

mobile phone or the Doppler on

the APP.

The Doppler has malfunctions.

Contact service personnel.

FHR cannot be

displayed

stably.

There is strong interference source

such as high frequency machines and

mobile phones nearby.

Use the Doppler away from strong

interference sources.

The fetal heart position has changed

because of fetal movement.

Relocate the Doppler to the best

fetal heart rate detection position.

Friction between the Doppler and

patient’s abdomen causes false

displaying.

Find the best fetal heart rate

detection position.

Sensitivity is

low and noise

is too much.

There is strong interference source

such as high frequency machines and

mobile phones nearby.

Use the Doppler away from strong

interference sources.

The Doppler is not applied with

coupling gel.

Apply coupling gel to the Doppler.

The Doppler is not placed at the best

detection position.

Relocate the Doppler to the best

fetal heart rate detection position.

The Doppler malfunctions.

Contact service personnel.

“-?-” displayed

on the screen

The Doppler malfunctions.

Contact service personnel.

SpO

PRcannot be

displayed

normally

SpO2 sensor is not fully covered by

finger

Put the finger on the sensor again

Strong ambient light

Do not use the device in an

environment with high ambient

light

Patient is in low perfusion or Patient’s

oxyhemoglobin is too low to be

measured

See a doctor.

Finger is trembling or patient is moving

Please keep still.

The Doppler malfunctions.

Contact service personnel.

Accuracy Results in Clinical Studies

The table below shows Arms values measured with the investigational devicein a clinicalstudy.

SaO

Range

Arms

90%-100%

1.01

80%-90%

2.01

70%-80%

2.01

70%-100%

1.68

The figure below shows the Bland-Altman Plot of SaO

vs SpO

measured withthe investigational device.

In the plots, the upper and lower dotted lines represent the upper and inferior limits of the 95%

consistency, and the middle dotted line represents the average of the bias.

⚫ Warranty and Service

Warranty

EDAN warrants that EDAN’s products meet the labeled specifications of the products and will be free

from defects in materials and workmanship that occur within warranty period.

The warranty is void in cases of:

A. damage caused by mishandling during shipping.

B. subsequent damage caused by improper use or maintenance.

C.damage caused by alteration or repair by anyone not authorized by EDAN.

D.damage caused by accidents.

E. replacement or removal of serial number label and manufacture label.

If a product covered by this warranty is determined to be defective because of defective materials,

components, or workmanship, and the warranty claim is made within the warranty period, EDAN will, at

its discretion, repair or replace the defective part(s) free of charge. EDAN will not provide a substitute

product for use when the defective product is being repaired.

Contact Information

If you have any question about maintenance, technical specifications or malfunctions of devices, contact

your local distributor.

Alternatively, you can send an email to EDAN service department at: support@edan.com.

EDAN INSTRUMENTS, INC.

Address: #15 Jinhui Road, Jinsha Community, Kengzi Sub-District, PingshanDistric,

518122 Shenzhen, P.R. China

Email: info@edan.com.cn

Tel: +86-755-2689 8326

Fax: +86-755-2689 8330