Q.E.C EAS-REL-4 User manual

https://qec.company
EAS-REL-4
4 CHANNEL RELAY MODULE
USER MANUAL

Safety & environment
Not following instructions can lead to
serious damages and voids all warranty
Not for use by children; use under adult
supervision at your own risk
When connecting high voltage equipment
use insulating gloves always
For indoor use only; keep away from rain,
liquids and moisture of any kind
To all residents of the European Union
Important environmental information about this
product:
This symbol on the device or
package indicates that disposal of
the product after its lifecycle
could harm the environment. Do
not dispose of the unit as unsorted
municipal waste; it should be
returned to your distributor or to a
specialized local recycling service.
Respect the local environmental
rules.

Relay basics
Each relay has three corresponding terminals: NO,
COM, NC. This means Normally Open, Common,
Normally Closed. When the input signal
corresponding to the relay is low the COM terminal
will be connected with the NC terminal. When the
input signal corresponding to the relay is high the
COM terminal will be connected with the NO
terminal.
The board is equipped with 4 high quality Schrack
general purpose relays from TE Connectivity. These
are rated 250V AC 16A and tested 25V DC 10A (non-
inductive; operating DC loads may shorten lifespan
of the relays and is not advised for prolonged
periods).
Never touch the relay module when
connected to high voltage! Potential damage
by electric shock depends on the human body
resistance. Generally up to 36V is considered to be
safe for the human body. A voltage of 50V and above
is considered hazardous and can already be life-
threatening!

Connect Raspberry Pi Zero or
compatible board
🛈Raspberry Pi Zero should be connected
pointing upwards, not downwards

🛈Make sure pins are properly aligned when
connecting

When attached directly to your Raspberry Pi Zero
(or compatible board) the GPIO pin numbers
corresponding to relays 1-4 are: 16, 17, 22, 23. You
must configure these GPIO’s for output in order to
control the relays.
For code examples and more info please visit
https://qec.company/products/eas-rel-4
* Raspberry Pi is a trademark of Raspberry Pi Trading

Connect Raspberry Pi or
compatible via flat cable
🛈When using flat/ribbon cable connect to
Raspberry Pi as shown above

When connected to your Raspberry Pi (or
compatible board) via flat/ribbon cable the GPIO pin
numbers corresponding to relays 1-4 are: 16, 17, 22,
23. You must configure these GPIO’s for output in
order to control the relays.
For code examples and more info please visit
https://qec.company/products/eas-rel-4
* Raspberry Pi is a trademark of Raspberry Pi Trading

Connect any controller via
low-level header
The relay board is also equipped with an 8-pin
locking header as shown below. You can use this
header to connect any controller to the relay board
using custom wiring.
relay power = Relay power
relay GND = Relay ground
digital GND = Control ground
digital 1 = Control input relay 1
digital 2 = Control input relay 2
digital 3 = Control input relay 3
digital 4 = Control input relay 4
The relays require a 5V DC power source to operate,
this should be connected to the Relay power and
Relay ground terminals. To switch the relays use a
1.8V-5V DC control input signal connected to the
corresponding terminals.
For code examples and more info please visit
https://qec.company/products/eas-rel-4

Product overview
4-channel relay module controlled by 4 opto
isolated digital lines. Used to control various
appliances and other high current equipment. Use
with Raspberry Pi Zero or compatible to turn into
programmable wireless/network relay module.
control input current: 5 mA
control input voltage: 1.8-5 V DC
relay rated: 250V AC 16A / tested 25V DC 10A
relay coil voltage: 5 V DC
board dimensions: 76 x 107 x 18 mm
operating voltage: 5 V
manufactured in: PRC
* Raspberry Pi is a trademark of Raspberry Pi Trading
Handellaan 8, 5251 HN, Vlijmen, Netherlands
https://qec.company