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Operating instructions
MB-703 Measuring adapter
MB-704 Measuring adapter
Item no. 1674852
Item no. 1674853
Intended use
This product is designed to measure voltage and current on a 9 V block battery. Measurements can also
be made when the battery is connected to a load. A measuring adapter allows you to connect the load and
battery test cables at the same time. The battery test cables connect to a suitable measurement device (e.g.
multimeter) to allow you to take measurements.
This product is intended for indoor use only. Do not use it outdoors. Contact with moisture (e.g. in bathrooms)
must be avoided under all circumstances.
For safety purposes, you must not rebuild and/or modify this product. Using the product for purposes other
than those described above may damage the product. In addition, improper use can cause hazards such as
a short circuit or fire. Read the instructions carefully and store them in a safe place. Only make this product
available to third parties together with its operating instructions.
This product complies with statutory, national and European regulations. All company and product names
included herein are trademarks of their respective owners. All rights reserved.
Package contents
• Measuring adapter (with battery test cables)
• Operating instructions
Up-to-date operating instructions
To download the latest operating instructions, visit www.conrad.com/downloads or scan the QR code on this
page. Follow the instructions on the website.
Explanation of symbols
The symbol with an exclamation mark in a triangle is used to highlight important information in
these operating instructions. Always read this information carefully.
This symbol indicates special information and advice on how to use the product.
Safety information
Read the operating instructions and safety information carefully. If you do not follow the
safety instructions and information on proper handling in these operating instructions,
we will assume no liability for any resulting personal injury or damage to property. Such
cases will invalidate the warranty/guarantee.
a) General information
• The device is not a toy. Keep it out of the reach of children and pets.
• Do not leave packaging material lying around carelessly. It could become a dangerous
plaything for children.
• Protect the product from extreme temperatures, direct sunlight, strong jolts, high humidity,
moisture, flammable gases, vapours and solvents.
• Never expose the product to mechanical stress.
• If it is no longer possible to operate the product safely, stop using it and prevent unauthorised
use. The safe operation can no longer be guaranteed if the product:
- is visibly damaged,
- is no longer working properly,
- has been stored for extended periods in poor ambient conditions or
- has been subjected to any serious transport-related stress.
• Please handle the product carefully. Jolts, impacts or a fall even from a low height may
damage the product.
• Always observe the safety instructions and operating instructions of any other devices which
are connected to the product.
• Consult a technician if you are not sure how to use or connect the product, or if you have
concerns about safety.
• Maintenance, modifications and repairs must be carried out by a technician or a specialist
repair centre.
• If you have questions which remain unanswered by these operating instructions, contact our
technical support service or other technical personnel.
b) Persons and product
• Never pour any liquids over electrical devices or place objects filled with liquid next to the
product.
• Never use the product immediately after it has been brought from a cold room into a warm
one. The condensation that forms may destroy the product. Allow the product to reach room
temperature before connecting it and putting it to use. This may take several hours.
• Make sure that the battery test cables are not squeezed, bent, damaged by sharp edges or
subjected to mechanical stress.
• Check the battery test cables and plugs for damage before each measurement.
• Do not use the product if the device or battery test leads appear damaged or if you suspect
that the device is not working properly. Pay particular attention to the insulation. Never carry
out any measurements if the protecting insulation is defective (torn, ripped off etc.).
• Always comply with the accident prevention regulations for electrical equipment when using
the product in commercial facilities.
• In schools, educational facilities, computer and DIY workshops, the measurement adapter
must be used under the supervision of qualified personnel.
c) Battery information
• Always ensure that the battery is connected in the correct polarity.
• Do not connect the battery connector to leaking or damaged batteries, otherwise the batteries
may cause acid burns if they come into contact with your skin. Always use suitable protective
gloves when handling damaged batteries.
• Batteries must be kept out of the reach of children. Do not leave batteries lying around, as
there is a risk that children or pets may swallow them.
• Batteries must not be dismantled, short-circuited or thrown into open flames. Never recharge
non-rechargeable batteries. This may cause an explosion!
Product overview
Battery input
2
1
Battery input
2
1
1
Negative 4 mm plug (COM)
3
Positive battery contact (to battery)
5
Negative load contact (to load)
7
Positive plug (battery bridge)
Setup
a) Connection diagram (schematic)
Fig. 1
4
Load
3
5
MB-703
6
7
Load
4
3
MB-704
6
7
2
Negative battery contact (to battery)
4
Positive load contact (to load)
6
Positive 4mm plug (to load)
Battery
9 V/DC
COM
5
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