Instructions

- has been subjected to strong magnetic elds, such as those found close to
machinery or loudspeakers
• Safe operation can no longer be assumed if:
- there are signs of damage
- the device no longer functions
- the device was stored for a long period of time in unfavourable conditions
- it was exposed to heavy loads during transport
b) Mains voltage/voltages dangerous to the touch
The relay card is also suitable for switching voltages dangerous to the touch or
mains voltage (see chapter "Technical data"). In this case:
Caution, safety hazard!
The product should only be installed by people with relevant electrical knowl-
edge and experience! *)
If it is not installed properly, you risk:
• your own life
• and the life of user of the electrical device.
If it is not installed properly, you risk severe damage to property, e.g., by re.
You face the risk of personal liability for personal injury and material damage.
Always consult an electrician!
*) Technical knowledge required to perform the installation:
For the installation, the following specialist knowledge is required in particular:
• The “Five safety rules”: Disconnect from the mains; protect against accidental
switch-on; ensure there is no voltage; earth and short-circuit; cover or protect
neighbouring live parts.
• Use suitable tools, measuring devices and personal protective equipment, where
necessary.
• Analyse measurement results.
• Use electrical installation materials to ensure the turn-off criteria.
• IP protection ratings
• Install electrical installation materials
• Type of power supply (TN system, IT system, TT system) and the correspond-
ing connection criteria (classic earthing, protective earthing, necessary additional
measures etc.)
If you do not have the expertise required for connection and installation, do
not connect and install it yourself but ask a qualied technician.
• If mains voltage or other voltages dangerous to the touch are switched via the
relay card, the relay card must be installed and operated in a suitable housing.
Care must be taken to ensure both suitable protection against accidental contact
and appropriate xing of the cables (strain relief).
• Even if only non-hazardous voltages are connected, installing the card in a hous-
ing is still recommended to avoid short circuits on the circuit board.
Connection/control
Observe the enclosed English operating instructions.
Disposal
Electronic devices are recyclable waste and must not be placed in household waste.
At the end of its service life, dispose of the product in accordance with applicable
regulatory guidelines.
Specications
Operating voltage ......................... 12 V/DC
Power consumption ...................... max. about 20 mA
Relay switching channels ............. 4 (each 1x changeover contact)
Relay contact rating ...................... 30 V/DC, 10 A
...................................................... 250 V/AC, 10 A
Environmental conditions ............. Temperature 0 °C to +60 °C,
Relative humidity max. 95 % (not condensing)
Dimensions ................................... 77 x 55 x 17 mm (L x W x H)
Weight .......................................... 58 g
Important Information
Relay module 4-way 12 V
Item no. 2250322
Intended use
The relay card comprises four relays with changeover contact. This allows electrical circuits to
be switched. The relay card can be controlled via special microcontrollers (Arduino, Raspberry
Pi, 8051, AVR, PIC, DSP, ARM, MSP430) (TTL logic). The relay card must be installed in a
suitable housing (not supplied).
For safety and approval purposes, do 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 result in short circuits, res, electric shocks or other hazards. Read the operating
instructions and this information sheet carefully and store them in a safe place. Pass on the
product to third parties only along with the product documentation.
This product complies with statutory national and European regulations. All company and prod-
uct names are trademarks of their respective owners. All rights reserved.
Package contents
• Relay board
• Manufacturer's manual (English)
• Information sheet
Up-to-date operating instructions
Download the latest operating instructions at www.conrad.com/downloads or scan the QR code
shown. Follow the instructions on the website.
Explanation of Symbols
The symbol with the lightning in a triangle indicates that there is a risk to your health,
e.g. due to an electric shock.
An exclamation mark in a triangle indicates important instructions in this information
sheet which absolutely have to be observed.
The arrow symbol indicates special information and advice on how to use the prod-
uct.
Safety instructions
Read through this information sheet carefully and observe the safety instruc-
tions in particular. If you do not follow the safety instructions and information
on proper handling in this information sheet, we assume no liability for any
resulting personal injury or damage to property. Such cases will invalidate the
warranty/guarantee.
a) General information
• The unauthorised conversion and/or modication of the product is prohibited for
safety and approval reasons.
• Maintenance and repair work must be done by a technician.
• The product is not a toy and should be kept out of the reach of children.
• The product is intended for use only in dry indoor rooms; it must not get damp
or wet; never touch it with damp wet hands! There is a risk of a life-threatening
electric shock!
• The product should not be exposed to extreme temperatures, direct sunlight,
intense vibrations or heavy mechanical stress. Keep it away from dust and dirt.
• Handle the product with care, it will be damaged by jolts, impacts or a fall from
a low height.
• 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. Further-
more, it can cause a lethal electric shock!
Allow the product to reach room temperature before connecting it and putting it
into use. This may take several hours.
• Do not leave packaging material carelessly lying around, because it could be-
come a dangerous toy for children.
• For installations in industrial facilities, follow the accident prevention regulations
for electrical systems and equipment issued by the national safety organisation
or the corresponding national authority.
• If you have any questions that are not answered in this information sheet, please
contact our technical service or another specialist.
• Avoid the following unfavourable ambient conditions at the installationlocation
and during transport:
- Dust or ammable gases, fumes or solvents
- Strong vibrations, impacts or blows
This is a publication by Conrad Electronic SE, Klaus-Conrad-Str. 1, D-92240 Hirschau (www.conrad.com).
All rights including translation reserved. Reproduction by any method, e.g. photocopy, microlming, or the capture in
electronic data processing systems require the prior written approval by the editor. Reprinting, also in part, is prohibited.
This publication reects the technical status at the time of printing.
Copyright 2020 by Conrad Electronic SE. *2250322_v1_0420_02_jh_hs_en