1-3 Overload protection

When pressed for more than 2 seconds, continuous test
voltage is output andindication appears. To release
the lock, press the LOCK or MEASURE button, the test
voltage output is stopped, the circuit under test isdischarged automatically, and the last displayed value
appears on the display together with theindication.
40 Ω measurement function:
When pressed for more than 2 seconds,
indication
appears and the tester continues measuring. To release
the lock, press the LOCK or MEASURE button. The
measurement is stopped and the last displayed value
appears on the display together with theindication.

The maximum rated input value and overload protection have been defined forthe input terminals of each function as shown below.
FunctionMΩV
4000 Ω
40 Ω

MG1000/MG500
INSULATION RESISTANCE TESTERINSTRUCTION MANUAL
Dempa Bldg., 4-4 Sotokanda 2-Chome
Chiyoda-ku, Tokyo, Japan

07-1409 2040 6012

[1] SAFETY PRECAUTIONSBefore use, read the following safety precautions.
Thank you for purchasing the Sanwa MG1000/MG500 digital insulation
resistance tester. Before use, please read this manual thoroughly to ensure
correct and safe use. Keep this Instruction Manual together with the product.
Be sure to read the information under “
WARNING” that is intended to prevent
personal injury such as burn and electric shock and other serious accidents.

1-1 Explanation of Warning Symbols

The meaning of the symbols used in this manual and attached to the product is
as follows:: Very important instructions for safe use• The warning messages are intended to prevent accidents to operating
personnel such as burn and electric shock.
• The caution messages are intended to prevent incorrect handling andmeasurement which may damage the product.
: Dangerous voltages: Ground.
: DC.
: AC.
: Fuse.
: Double or enhanced insulation.

1-2 Warning Messages for Safe Use

WARNING
The following instructions are intended to prevent personal injury such as burn andelectric shock. Be sure to follow them when using the tester:
WARNING
1. Never use the tester on a high-power or high-voltage line.
2. Voltages above 70 VDC or 33 Vrms AC (46.7 V peak) are hazardous tohuman body. Never touch them.
3. Disconnect circuit power before testing insulation resistance.
4. Use caution with the high voltages output when performing insulation
resistance measurement to avoid electric shock.
5. To prevent electric shock, always discharge capacitive circuits after the
insulation resistance measurement.
6. Never input signals exceeding the maximum rated input value (see 1-3).
7. Never use the tester for measuring voltages of lines connected toequipment (e.g. motors) that generates induced or surge voltage since it
may exceed the maximum allowable overload input.
8. Never use the tester if the tester or test leads are damaged or broken.
9. Never use the tester with the rear-case or battery lid removed.
10. When using the test leads, keep your fingers behind the finger guards.
11. During measurement, do not change the function or range nor replace the plugs.
12. Never use the tester when it is wet or with wet hands.
13. Be sure to use the fuse of the specified rating and specification.
14. When connecting the alligator clip, connect it to the grounding side of theobject to be measured first. When disconnecting it, disconnect the test
lead from the line first, and then disconnect the teat lead from thegrounding side of the measured object.
15. Never attempt repair or modification, except for battery and fuse replacement.
16. Inspect the tester at least once a year.
17. This tester is for indoor use only.
18. Never use the tester near equipment that generates strong
electromagnetic waves or is charged.
19. Do not use the instrument in a place where corrosive or explosive gas is
produced.

CAUTION
1. The measuring terminals output high voltages during insulation resistancemeasurement.
To prevent damaging the tester and parts (including chips) with low or unknown
withstanding voltages, connected to the measured electrical path (circuit), it isrecommended to disconnect them from the electrical path before
measurement. This care is specially important with computer equipment.
2. The rated measuring voltage used in insulation resistance measurement
should be as close as possible to the operating voltage of the circuitry tomeasure. For example, when measuring an electrical path of 200 V, it isrecommended to use a tester with a rated measuring voltage of 250 V.
3. While measuring insulation resistance, it will probable take time to getsteady result value on display in case that there is electrostatic capacitancein the measured circuit.

Max. Rated Input
Overload ProtectionMΩ range: Within 120 % of the rated measuring voltage.
600 Vrms
780 Vrms
600 Vrms
Fuse, 0.5 A / 600 V

Measurement Category (Overvoltage Category)
Overvoltage measurement category II (CAT. II ) :Line on the primary side of equipment with power cord to be connected to thereceptacle.
Overvoltage measurement category III (CAT. III ) :Line from the primary side or branch of equipment which directly takes inelectricity from a distribution board to the receptacle.
Overvoltage measurement category IV (CAT. IV ) :Line from the service conductor to the distribution board.

[2] APPLICATIONS AND FEATURES
2-1 Applications

This instrument is a DC insulation resistance tester for use in measurement of
insulation resistance of a power line and power equipment within the range of
600 V under CAT III.

2-2 Features• Safety design in compliance with IEC61010-1• MΩ function with automatic live circuit detection (>30 V AC/DC)• Easy-to-read display showing large figures and log bar graph for reading in an
analog feeling• Automatic hold function to hold the last displayed value to look it safely after
measurement• LCD panel with backlight function• Auto discharge function• 40.00 Ω measurement function (≧200 mA short circuit current)

6

LOCK button

Turns backlight on/off. The backlight goes off
automatically after 10 seconds.
• When the LIGHT button is pressed during MΩ measurement
which is performed by holding the MEASURE button, thegeneration of the measurement voltage is interrupted andthe displayed value shows theindication.

LIGHT button

Zero Ohm adjustment for 40 Ω measurement function orwhen selecting the maximum MΩ measurement function.

7

0 Ω ADJ button

8

Power/function
switch9

RATING VOLTAGE
indicator

10

ALARM indicator

11

Test lead storage space

12

Turns the tester ON/OFF or to select a function. The body covercannot be closed unless this switch is set to the OFF position.

Strap hook

12

19

20

21

Negative value indicatorMΩ measurement function:
Lights up when the tester outputs test voltage.
Lights up when the object to be measured is charged
about 30 V or more.
V measurement function:
Lights up when the input is 600 Vrms or more.
DC voltage operation indicator.

17
16

23

15
14

24

3
11
10
9

4

Test lead (TL-112a)
When not covered
Removable test pin covers
When not covered：CAT.Ⅱ 1000 V
When covered：CAT.Ⅲ 600 V

8

Plugs
5

6

18

13
Removable screw-in
test pin cover (rotate
to remove)

Test pins

Fingerguards7Strap (ST-50)

Name
1

EARTH/COM terminal

2

LINE/+ terminal

3

LCD panel

4

MEASURE button

Description

Grounding/COM terminal for connecting the black alligator clip.

20

Logarithmic bargraph
Disabled in the 40 Ω measurement function

24

MΩ measurement function:• Press and hold the button to output the test voltage.
When the button is released, the test voltage output
is stopped, the circuit under test is discharged
automatically, and the last displayed value appearson the display together with theindication.
• When the button is pressed during continuous test
voltage generation using the LOCK button, the test
voltage is stopped, the last displayed value is held,
and the circuit under test is discharged automatically.
40 Ω measurement function:• Press and hold the button to start measuring. Whenthe button is released, the test voltage output is
stopped and the last displayed value is held appearson the display together with theindication.
• When the button is pressed during continuous
measurement using the LOCK button, themeasurement is stopped and the last displayed value is held.

[4] SPECIFICATIONS
4-1 General Specifications
AC Sensing
LCD
Sampling rate
Range selection

Over-range indication

Temperature 23 ± 5℃, humidity 45 % to 75 % RH.
rdg: Reading. dgt: Digits
4-2-1 Insulation resistance measurement functions (kΩ , MΩ)Model:MG1000
Nominal test voltage &Measurement Range

Centerscale

Measurement Range

Average value
4200 count with log bar graphApprox. 2 times / sec.
Auto only
Range up: approx. 4200 count or over,Range down: approx. 380 count or below“OL” indication on LCD
V function: 780 V or overMΩ, 4000 Ω, 40 Ω function: Approx. 4200 count or overPolarity indication“－” indication only when negative input” lights or flickers at about 7.7 V-7.2 V or below
Low battery indication “Environmental condition Altitude 2000 m or below, pollution degree 2
Operating temperature / 0 ℃ to 40 ℃ and maximum relative humidity 90 %humidity(No condensation)
Storage temperature / -10 ℃ ~ 50 ℃, 70 %RH or below (with battery removed).
humidity
Power supply
R6P 1.5 V x 6 pcs (MG500) ; LR6 1.5 V x 6 pcs (MG1000)

Accuracy

1st effective
250 V
measurement range 0.500～20.00 MΩ ±(3 %rdg+4 dgt)
4.000 MΩ/40.00 MΩ 10 MΩ
0～0.499 MΩ
2nd effective
400.0 MΩ/4000 MΩ
measurement range 20.01～4000 MΩ ±(5 %rdg+5 dgt)

1st effective
500 V
measurement range 1.000～500 MΩ ±(3 %rdg+4 dgt)
100
MΩ
4.000 MΩ/40.00 MΩ
0～0.999 MΩ
2nd effective
400.0 MΩ/4000 MΩ
measurement range 501～4000 MΩ ±(5 %rdg+5 dgt)
1st effective
1000 Vmeasurement range 2.000～1000 MΩ ±(3 %rdg+4 dgt)
4.000 MΩ/40.00 MΩ 100 MΩ
0～1.999 MΩ
2nd effective
400.0 MΩ/4000 MΩ
measurement range 1001～4000 MΩ ±(5 %rdg+5 dgt)

Open circuit voltage 1 to 1.25 times of nominal test voltage
Rated current

1.0-1.2 mA (250 V @0.25 MΩ, 500 V @0.5 MΩ, 1000 V @1 MΩ)Short-circuit current 2 mA or lessLive circuit detection At ≧30 V AC/DC or more, inhibits test, buzzer sounds and
ALARM indicator lights up.

Model:MG500
Nominal test voltage &Measurement Range

Centerscale

125 V
400.0 kΩ
4.000 MΩ/40.00 MΩ
400.0 MΩ/4000 MΩ

1 MΩ

Measurement Range

Accuracy

1st effective
measurement range 20.0 kΩ～10.00 MΩ ±(3 %rdg+4 dgt)
0～19.9 kΩ
2nd effective
measurement range 10.01～4000 MΩ ±(5 %rdg+5 dgt)

Short-circuit current 2 mA or less

Unit indicators.

23

4-2 Measurement Range and Accuracy

Test lock (continuous test voltage output) indicator
Low battery warning indicator:
Appears when the batteries are exhausted (to about
7.2 V or less). When the indicator appears or blinks,
replace the batteries with new ones.

22* At 5-sec. ON / 25-sec. OFF

Open circuit voltage 1 to 1.3 times of nominal test voltage

0 Ω adjustment indicator

21

MG500 : Approx. 500 times (with manganese battery)
MG1000 : Approx. 300 times (with alkaline battery)
IEC61010-1, IEC61010-2-030, IEC61010-2-033 CAT.III 600 V
IEC61557-1/2/4, IEC60529-IP54, IEC61010-031
IEC61326
EMC
Dimensions
170 (L) X 142 (W) X 57 (H)MassApprox. 600 g (battery included)
Power consumption Apporox. 7 mA at V function
Accessories
test leads (TL-112a), Strap (ST-50), instruction manual

Auto Power Save mode indicator
The tester enters “power save mode” automatically if it
has not been operated for about 30 minutes. The tester
come out of “power save mode” when power/function
switch is turned to OFF once and set to the required
function again.
To cancel Auto Power Save function, turn the
power/function switch from OFF position to any desired
function while holding the LIGHT button pressed.
*A small electric current from power supply is present inAuto Power Save mode. Be sure to set thepower/function switch to “OFF” after measurement.
Data Hold indicator

19

Line/+ terminal for connecting the red test lead.

Displays the value, function name or voltage output
status.

To attach a strap.

AC voltage operation indicator

17

12

1
2

Space to store the test leads and alligator clips.

14

16

22

Lights up when the input is about 30 V AC/DC or more.
It can be used as the live circuit detection, etc.

Numeral and decimal point

LCD panel
18

Lights up in MΩ measurement function. It blinks when
the test voltage drops below rated value.

1315[3] NAMES AND FUNCTIONS OF COMPONENT UNITSInstrument body

5

Time ofmeasurement *Safety1st effective
250 V
measurement range 50.0 kΩ～20.00 MΩ ±(3 %rdg+4 dgt)
400.0 kΩ
10 MΩ4.000 MΩ/40.00 MΩ
0～49.9 kΩ
2nd effective
400.0 MΩ/4000 MΩ
measurement range 20.01～4000 MΩ ±(5 %rdg+5 dgt)
1st effective
500 V
measurement range 100.0 kΩ～500 MΩ ±(3 %rdg+4 dgt)
400.0 kΩ
100 MΩ
4.000 MΩ/40.00 MΩ
0～99.9 kΩ
2nd effective
400.0 MΩ/4000 MΩ
measurement range 501～4000 MΩ ±(5 %rdg+5 dgt)

Rated current

1.0-1.2 mA (125 V @0.125 MΩ, 250 V @0.25 MΩ, 500 V @0.5 MΩ)Live circuit detection At ≧30 V AC/DC or more, inhibits test, buzzer sounds and
ALARM indicator lights up.

Note
When the displayed value is 2000 MΩ or more, the lowermost digit is fixed at 0.
* Insulation resistance measurement principle:
Detecting a current flowing through the circuit to bemeasured being applied a DC voltage, the insulation
resistance is calculated from "the voltage / the current".
Operating instrumental uncertainty:±30 %
variation due to changing "E1：Position, E2：Supply voltage, E3:Temperature"（This specification describes maximum values accepted by the standard.）

4-2-2 Voltage measurement function (AC/DCV)

Range
Resolution
Accuracy
Input Resistance Max. Overload Protection
AC/DC 600 V
1V±(3 %rdg+2 dgt)
9 MΩ
780 Vrms

Note
ACV and DCV are automatically detected.
Sensitivity: 2 V or higher.
AC frequency bandwidth: 45-400 Hz
The ALAMP indicator lights up when the input is ≧30 V AC/DC.
“” appears and buzzer sounds if the input is ≧600 Vrms.
Maximum display value: 780 V.
4-2-3 4000 Ω measurement function / Continuity buzzer ( Ω )Range
4000 Ω

Input Resistance Max. Overload Protection
Resolution
Accuracy1Ω±(3 %rdg+3 dgt)
≥3V
600 Vrms

Note
A buzzer sounds below about 40 Ω.
A buzzer sounds and the ALARM indicator lights up when the input is ≧30 V
AC/DC.

5-2 Start-up inspection
Inspection/ Check
Appearance
Batteries

Test leads

Fuse

MethodCheck if the instrument body appears damaged.
Check ifappears on the top right of the LCD. If
appears or blinking, replace all batteries with new ones (seesection 6-4-1).
Select the 4000 Ω measurement function, short the test leadand alligator clip, and ensure the displayed value is no morethan 1 Ω. If “OL” is displayed, replace the test leads as they
may be damaged.
Select the 40 Ω measurement function, short the test lead andalligator clip, and ensure the displayed value is no more than
0.05 Ω. If “OL” is displayed, replace the fuse as it may bedamaged (see section 6-4-2).

5-3 Voltage measurement method

5-5 4000 Ω Resistance measurement / Continuity check method
5-5-1 Buttons used in measurement
No button is used.

5-5-2 Measurement method
1. Set the power/function switch to “4000 Ω.”
2. Connect the test lead to the object to be measured.
3. Read the displayed value.

6-4 Battery / Fuse replacement

Battery when the meter is shipped:
A battery for monitoring has been installed prior to shipment from the factory. It
may be discharged before the expiration of the described battery life.
*The battery for monitoring is a battery used to check the functions andperformance of the product.

WARNING
1. If the rear case is removed with an input being applied to the measuringterminals, you may suffer electric shock. Before starting replacement,always make sure no input is being applied and the function switch is OFF.
2. Be sure to use the fuse of the specified rating and specification. Never use
a substitute nor short the fuse terminals.

6-4-1 Battery replacement: R6P 1.5 V x 6 pcs (MG500) ; LR6 1.5 V x 6 pcs (MG1000)

5-6 40 Ω measurement method

5-6-1 Buttons used in measurement
Measurement: MEASURE button and 0 Ω ADJ button.
Continuous measurement: LOCK button, 0 Ω ADJ and MEASURE button.

4-2-4 40 Ω measurement function ( Ω )Note
ACV and DCV are automaticallydetected.

40.00 Ω
0.01 Ω to 40.00 Ω±(3 %+ 10 dgt) (after 0 Ω ADJ)
0.01 Ω
6 V (typical value)
200 mA minimum ( ≤ 2.0 Ω )Fuse (0.5 A/600 V)

Display Range
Measurement range
Accuracy
Resolution
Open Circuit voltage
Short-circuit current
Protection

Note
1. An oscillation tone may be heard during measurement, but this is not malfunction.
2. The automatically held value is retained until the start of the next measurement
or the tester enters APS mode. The held value is released and the newmeasurement value is displayed when the next measurement is started.
3. If a measuring point of certain equipment for insulation resistance measurement is
unknown, contact the manufacturer of that equipment to ensure correct measurement.

Grounding Line side
(LINE)
side(EARTH)

Note: Use caution with battery polarity when replacing batteries.
Buttons used

6-4-2 Fuse replacement
Fuse: Part No. F1202, Ø6.3 X 32 mm, 0.5 A/600 V, breaking capacity 20 kA.
Spare fuse(optionally available)

Red indicator ON

5-4 Insulation resistance measurement method

Note
The bargraph display is disabled.

[5] MEASURING PROCEDUREWARNING

1. Be sure to conduct the start-up inspection described in section 5-2 below.
2. Before measurement, disconnect power supply from the object (circuit) tobe measured.
3. After measurement, be sure to discharge the high voltage charged in themeasured object.
4. During measurement, keep your fingers behind the finger guards of the test
leads and do not touch the metallic part of the alligator clips.
5. After measurement, be sure to turn the power/function switch to “OFF”
position to prevent electric shock and battery exhaustion.

5-4-1 Buttons used in the measurement
Measurement: MEASURE button, 0 Ω ADJ button (to set the max test voltage function)
Continuous measurement: LOCK and MEASURE buttons.
5-4-2 Measurement method
1. Connect the test leads to the object (circuit) to be measured.
GND

In case of Live circuit
OFF
MΩ

CAUTION

1. When selecting the maximum test voltage (insulation resistancemeasurement), hold the 0 _ ADJ button pressed while turning thepower/function switch. Otherwise, the display shows “Err0” and the test
voltage will not be output even if the MEASURE or LOCK button is pressed.
2. When the object to be measured is grounded, usually the alligator clip isconnected to the ground (EARTH) and the test lead to the measured circuit(LINE). (This connection method usually results in a lower measurement
value than the opposite connection method.)
3. To prevent measurement errors, prevent the test lead connected to theLINE terminal from touching the object to be measured or ground wheneverpossible.
4. The insulation resistance varied greatly depending on the temperature andhumidity as well as on the output voltage (test voltage). In general, higher
temperature, humidity and/or output voltage mean lower insulation
resistance.
5. Measurement is inhibited if voltage (≧30 V AC/DC) is present in the circuit.
6. Keep in mind that the time of auto discharge will be delayed if fuse has
broken.

5-1 Opening/closing the body cover

Beep
MΩ

Red
indicatorON

If the object to be measured is a live circuit (≧30 V AC/DC), the voltage isdisplayed, buzzer sounds, and the ALARM indicator lights up. In this case, thetest voltage cannot be output by pressing the MEASURE or LOCK button.
Disconnect the power supply from the object to be measured and try again.
2. Output the test voltage.
Start measurement (MEASURE button)

Continuous measurement (LOCK button)

Short beeps

Short beeps
MΩ

MΩ

Green
indication
ON/blinking

Press

The test voltage is output when the MEASURE
button is held pressed.
appears and shortbuzzer sounds during this operation.

3. End the measurement.

5-6-2 Measurement methods
Method using the MEASURE button:
1. Set the function switch to “40.00 Ω.”
2. Short-circuit the test leads, press the MEASURE button, and release the
MEASURE button when the tester detects a stable reading. The displayed
value will be held.
3. Press the 0 Ω ADJ button to reset the displayed value to “0.00 Ω.” [0 Ω ADJ]
should light up at this time.
4. Connect the test leads to the object to be measured, and press the
MEASURE button.
5. To end measurement, release the MEASURE button. The last displayed
value will be held automatically.
Method using the LOCK button:
1. Set the function switch to “40.00 Ω.”
2. Short-circuit the test leads and press the LOCK button.
3. When the tester detects a stable reading, press the 0 Ω ADJ button to reset
the displayed value to “0.00 Ω.” [0 Ω ADJ] should light up at this time.
4. Connect the test leads to the object to be measured and read the displayed value.
5. To end measurement, press the MEASURE or LOCK button. The last
displayed value will be held automatically.
Caution: The measurement consumes a large amount of current. Use caution
with the battery exhaustion.
The displayed value may not become “0.00” depending on thecontact condition while shorting the test leads.

[6] MAINTENANCEWARNING
1. The following instructions are very important for safety. Read this manual
thoroughly to ensure correct maintenance.
2. Calibrate and inspect the meter at least once a year to ensure safety andmaintain its accuracy.

Greenindication
ON/blinking

6-1 Maintenance inspection

Press and hold the LOCK button for more than
2 seconds to output the test voltage
continuously.
andappears and shortbuzzer sounds during this operation.

6-2 Calibration / Inspection

Hold formore than
2 sec. andthen release.

3. End of continuous measurement

1) Appearance: Is the meter not damaged due to falling or other cause?
2) Test leads: Are the test leads not damaged, or is the core wire not exposedfrom any part or broken?
If any of the above problems exists, stop using the meter and request for repair.
For more information, please contact your dealer or Sanwa agent.

6-3 Storage
MΩ

MΩ

ReleaseThe body cover cannot be closed unlessthe function switch is OFF.

Press hereorRelease the MEASURE button to stop
outputting the test voltage.

here.
Press the MEASURE or LOCK button tostop outputting the test voltage.

At the moment the test voltage output is stopped, the last displayed value is held
automatically (indication) and the measured object (circuit) is discharged
automatically.
When the measured object (circuit) is discharged below 30 V, theindicator
goes off.

CAUTION
1. The panel and case are not resistant to volatile solvent and must not becleaned with thinner or alcohol.
2. The panel and case are not resistant to heat. Do not place the tester nearheat-generating devices.
3. Do not store the tester in a place where it may be subjected to vibration orfrom where it may fall.
4. Do not store the tester in places under direct sunlight, or hot, cold or humid
places or places where condensation is anticipated.
5. If the tester will not be used for a long time, remove the battery.

[7] AFTER-SALE SERVICE
7-1 Warranty and Provision

Sanwa offers comprehensive warranty services to its end-users and to its productresellers. Under Sanwa's general warranty policy, each instrument is warranted tobe free from defects in workmanship or material under normal use for the period ofone (1) year from the date of purchase.
This warranty policy is valid within the country of purchase only, and applied only
to the product purchased from Sanwa authorized agent or distributor.
Sanwa reserves the right to inspect all warranty claims to determine the extent to which
the warranty policy shall apply. This warranty shall not apply to disposables batteries,
or any product or parts, which have been subject to one of the following causes:
1. A failure due to improper handling or use that deviates from the instruction
manual.
2. A failure due to inadequate repair or modification by people other than Sanwa
service personnel.
3. A failure due to causes not attributable to this product such as fire, flood andother natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or dropping after thepurchase.

7-2 Repair

Customers are asked to provide the following information when requesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the productPlease contact Sanwa authorized agent / distributor / service provider, listed in
our website, in your country with above information. An instrument sent to Sanwa/ agent / distributor without above information will be returned to the customer.
Note:1) Prior to requesting repair, please check the following:
Capacity of the battery, polarity of installation and discontinuity of the test leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with the conditions stipulated in
7-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become higher than the price ofthe product. Please contact Sanwa authorized agent / service provider in advance.
The minimum retention period of service functional parts is 6 years after the discontinuationof manufacture. This retention period is the repair warranty period. Please note, however, if
such functional parts become unavailable for reasons of discontinuation of manufacture,etc., the retention period may become shorter accordingly.
4) Precautions when sending the product to be repaired To ensure the safety of the
product during transportation, place the product in a box that is larger than the
product 5 times or more in volume and fill cushion materials fully and then clearlymark “Repair Product Enclosed” on the box surface. The cost of sending andreturning the product shall be borne by the customer.

7-3 SANWA web site

http://www.sanwa-meter.co.jp/
E-mail: exp_sales@sanwa-meter.co.jp