8 Channel Relay Module Relay Board Low Level Arduino Triggered Relay Module With Optocoupler Protection
A Relay is a digital switch to control much higher voltages and currents than your normal Arduino boards does. When inputs a logic voltage, the relay will switch to allow current to flow or cutoff, depending on your wiring. A Relay usually consists of a coil, 1 common terminal, 1 normally closed terminal and one normally open terminal. When the coil is energized, the common terminal and the normally open terminal will have continuity.
The eight-channel relay module contains eight 5V relays and the associated switching and isolating components, which makes interfacing with a microcontroller or sensor easy with minimum components and connections. Each relay on the board has the same circuit, and the input ground is common to all eight channels.
Features:
5V 8 Channel Relay Module
8-channel Relay Board
Using high-current relay
AC250V 10A DC30V 10A
Contact some independent wiring
safe and reliable
Standard interface
can be extended in a variety of development board
With fixed screw holes for easy installation
Eight-Channel Relay Module Pinout
Pin Number
Pin Name
Description
1
GND
Ground reference for the module
2
IN1
Input to activate relay 1
3
IN2
Input to activate relay 2
4
IN3
Input to activate relay 3
5
IN4
Input to activate relay 4
6
IN5
Input to activate relay 5
7
IN6
Input to activate relay 6
8
IN7
Input to activate relay 7
9
IN8
Input to activate relay 8
10
VCC
Power supply for the relay module
11
GND
Ground reference for the module
12
VCC
Power supply selection jumper
13
RY-VCC
Alternate power pin for the relay module
Specifications of Eight-Channel Relay Module:
Supply voltage – 3.75V to 6V
Trigger current – 5mA
Current when relay is active – ~70mA (single), ~600mA (all eight)
Relay maximum contact voltage – 250VAC, 30VDC
Relay maximum current – 10A
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