Amazon.com: GeeekPi 4 Channel Relay Board Module for Raspberry Pi, Power Relay Module for Raspberry Pi 4B & Raspberry Pi 3 Model B+ & Raspberry Pi 3/2 Model B (No Programming Required/Programmable) :
Relay for Raspberry Pi or Arduino 1-Channel 5V Relay Module 250V/10A – JemRF
SainSmart 4-Channel 5V Relay Module for Arduino Raspberry Pi – SainSmart.com
Toggling lights with DockerPi 4 Channel Relay - NotEnoughTech
DIYables 4-channel Relay Module 5V for Arduino, ESP32, ESP8266, Raspberry Pi
5V two/2-Channel Relay Module Shield ARM PIC AVR DSP Electronic 10A raspberry Pi relay Shield 4 channel 8 channel relay module - AliExpress
Waveshare Raspberry Pi Relay Board - ElectroPeak
HAT 4 channel-Relay 5V for Raspberry Pi/ CE certification - Keyestudio KS0212
Raspberry Pi Expansion Board, 8-ch Relays
12V 1/2/4/8 Channel Relay Board Module for Arduino Raspberry Pi ARM AVR DSP PIC | eBay
4 Channel Relay Hat for Raspberry Pi 3B+/3B/2B - RobotShop
4-Channel Relay HAT for Raspberry Pi
Connecting a Relay Board to a Raspberry Pi - My HydroPi
Inland RPI 4-Channel Relay 5V Shield for Raspberry Pi/ CE Certification - Micro Center
4 Channel Relay Hat for Raspberry Pi 3B+/3B/2B - RobotShop
4-Channel SPDT Relay HAT for Raspberry Pi | Seeed Studio Wiki
4-Channel DPDT Signal Relay Controller + 4 GPIO with I2C Interface - NCD Store
Relay card 24V - 4 channels for Raspberry PI, Arduino, PIC, AVR
Keyestudio RPI 4channel-Relay 5V Shield for Raspberry Pi/ CE certification
Raspberry Pi: 4-channel Relay step-by-step with example scripts for home automation - YouTube
Wiring a 4 channel relay - is this possible? - Raspberry Pi Stack Exchange
4-Channel Relay Module for Arduino & Raspberry Pi - 5V - PiShop.us
Keyestudio RPI 4channel-Relay 5V Shield for Raspberry Pi/ CE certification
Raspberry Pi 4 with 4 Channel 5A 250V AC / 30V DC Compatible 40Pin Relay Board - YouTube
MakerFocus 4 Channel Relay Board Module for Raspberry Pi 4B/3 Model B+
