Relay 12V with Optocupler, how to? - General Electronics - Arduino

hi guys, I have this relay: im trying to connect it this way: (althoug the next image is a 5V relay im using the 12V one, it waas easy to find the image of the 5V but my relay is the 12V one) If I connect the DC+ and DC- to the arduino directly, the green light of pwer from the relay turn on, and with the blink program the red light of the relay is turning off and on and the blink in the arduino is also working(i added the blink in both arduino and relay ti see what happens), so the sign

12V 1 Channel Relay Module with Optocoupler for Arduino – Aideepen

Input on Relay: The control of loop of earth wire - General Electronics - Arduino Forum

Connecting Relay and arduino with a load - General Electronics - Arduino Forum

12V 2 channel relay module, can be controlled by any 12V digital output from your microcontroller. With patch optical isolation, strong drive ability

WMYCONGCONG 5 PCS 2 Channel 12V Relay Module with Optocoupler Low Level Trigger Expansion Board for Raspberry Pi Arduino Use

Wiring a Opto-Isolated Relay to Arduino - #20 by Paul_B - General Electronics - Arduino Forum

How to Use Any Relay With Your Arduino the Safe Way - Instructables

5v/12v 1/2/4/8 Channel Relay Module Optocoupler Relay Output - Temu

12v 1/2/4/8 Channel Relay Module Optocoupler Isolation - Temu

Are optocouplers even needed to switch a relay? - Project Guidance - Arduino Forum

Opto isolated dual relay module (Arduino)

1, The module uses genuine quality relay , normally open interfaces Maximum load : AC 250V/10A, DC 30V/10A; 2, Using SMD optocoupler isolation ,

One 1 Channel 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger Power Supply Module for Arduino

Wiring a Opto-Isolated Relay to Arduino - #20 by Paul_B - General Electronics - Arduino Forum

5V/12V/24V Relay Module,1 Channel Optocoupler Relay Module Board High & Low Trigger (5V): : Industrial & Scientific