QUASAR CODES 3140 - DTMF Telephone Relay Switcher
General Guidelines for Electronic Kits and Assembled Modules
Thank you for choosing one of our products. Please take some time to carefully read the important
information below concerning use of this product. The assembly and operating instructions are on the
following pages.
WEEE Directive (Waste Electrical and Electronic Equipment)
Notice To All European Union Citizens. Important environmental information
about this product.
The crossed out wheeled bin symbol on this product, package or documentation
indicates that disposal of this product after its lifecycle could harm the environment.
Do not dispose of this product (or batteries if used) as unsorted municipal waste. It
should be disposed by a specialized company for recycling.
The unit should be returned to your distributor or to a local recycling service. Please
respect the local environmental rules. If in doubt contact your local authorities about waste disposal rules.
Safety: General rules concerning safe use of our Kits or Modules.
To ensure your safety, please observe these safety measures. In no way are these complete. As
safety requirements vary, please check with your local authorities, in order to comply with local
requirements. If in doubt, seek the help of a qualified person.
Battery or wall-adaptor operated devices are safe devices. They do not require special attention
unless mains voltage is connected to an output e.g. a relay.
To ensure electrical safety, and also protection from fire or personal injury, make sure your
mains operated equipment complies with these safety hints:
•
Use a suitable plastic enclosure. If a metal enclosure is used, make sure it is properly earthed.
•
Use a power switch if the device consumes more than 10W. Use a double pole switch for mains
operated, transformer-less kits.
•
Mount a fuse in series with the mains switch. Use a slow blow (T) 50mA fuse for transformers up
to 10W and a 100mA fuse for transformers up to 20W.
•
Use a mains input connector, or a robust power cord with a clamp.
•
Internal wiring carrying mains voltages must have a minimum cross-sectional area of 0.5mm
2
.
If supplied, attach the power rating label near the power cord of the device and fill-out the mains voltage,
frequency, power consumption and fuse values.
Troubleshooting and Support
90% of non working kits are due to poor soldering.
We operate a Get-You-Going service for non-working kits but there is a charge based on the time and
components needed to complete the repair. Quite often it is not economically viable for us to repair and it
is cheaper to supply a new ready made product at full cost.
Disclaimer
Quasar Electronics reserves the right to change product specifications or to discontinue products without
notice. Quasar Electronics cannot be held responsible for any loss or damage, direct or indirect, which
might occur from the use of a product. Quasar Electronics Kits or Modules are intended for educational
and demonstration purposes only. They are not intended for use in commercial applications. If they are
used in such applications the purchaser assumes all responsibility for ensuring compliance with all local
laws. In addition, they are not suitable for use as or as a part of life support systems, or systems that might
create a hazardous situation of any kind.