Learn how to connect 4-channel relay module to Arduino, how to program Arduino to control 4-channel relay module step by step. The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino.
Help with 4 channel relay : r/homeautomation
4 Channel 5V Relay Module 10A/250V
In-Depth: Interface Two Channel Relay Module with Arduino
5V Four-Channel Relay Module - Pin Diagram, Specifications, Applications, Working
4-Channel Relay Module (5VDC - 250V 10A) in Canada Robotix
DURABLE: Relay module made of 100% brand new and high quality meterial, with good performance and long service life. EASY TO USE: High/low level
AC100V-250V 30A 4 Channel Relay Module High Power DC5V High Low Level Trigger Switch Module
Inland 4-channel Relay Module - Micro Center
ESP8266 4-Channel relay module - Microcontrollers - Arduino Forum
4-Channel Relay Driver Circuit and PCB Design