One 1 Channel Relay Module Shield 5V Control 120V/10A w/ Optocoupler for Arduino

For Arduino. 1x One Channel Relay Module.

HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with Opto Isolation High Low Level Trigger

2 Channel Relay Board 12V - ADIY

Home Automation - How to Add Relays to Arduino : 10 Steps - Instructables

Home Automation - How to Add Relays to Arduino : 10 Steps - Instructables

2 Channel Relay Module 12V 24V High and Low Level Trigger Relay Control With Red Optocoupler

2 Channel Relay Module 12V 24V High and Low Level Trigger Relay Control With Red Optocoupler

Relay & Relay Modules - Electronic Spices Mini 24v,12v, 5V DC Power Sugar Cube Relay Manufacturer from Delhi

8 Node SMT Smart Home-Automation PCB & Blynk 2.0, Details

supply and Transistor input

INVENTO 2pcs 6V DC Relay 6 Pin 6V 30A T Shaped PCB Mount Relay SPDT Relay for DIY Projects

SainSmart 4-Channel 5V Relay Module for Arduino Raspberry Pi –

SainSmart 4-Channel 5V Relay Module for Arduino Raspberry Pi –