Arduino 4 Relays Shield - RobotShop

4 Channel Relay Hat for Raspberry Pi 3B+/3B/2B - RobotShop

4 Channel Relay Shield for Arduino UNO - DFRobot

Description Completely new design capable of controlling 4 relays Compatible with Arduino UNO Rev3 Each Relay has its own test button Supply Voltage

DFRobot Relay Shield 2.1 for Arduino

2-Channel 5V Relay Module - RobotShop

HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Automotive

The Arduino 4 Relays Shield works with Arduino Uno, Uno SMD, Mega, Zero, Due, or Leonardo. Each relay can be independently controlled and provides a 2 pole changeover. Doesn't need external power, works with the power input on your Arduino board. Includes a plastic separator to electrically isolate the relays from the microcontroller. Connect other sensors and actuators through the shield’s Molex connectors.

Arduino 4 Relays Shield A000110

4 Channel 5V Relay Shield Module - RobotShop

HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Automotive

Seeed Studio 103030009 Other Development Tools Relay Shield V3.0