Amazon.com: HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Automotive
5V 2 CH 2CH Channel Relay Module Expansion Board for Arduino Low Level Optocoupler Triggered 2 Way Relay Switch: Amazon.com: Industrial & Scientific
Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics
Amazon.com: SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC : Everything Else
Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
Amazon.com: JBtek 8 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
Amazon.com: 10Gtek# 5V 1-Channel Relay Module with Opto-Coupler high Low Level Trigger for Arduino UNO STM32 Raspberry Pi, Pack of 2 : Industrial & Scientific
SainSmart 5V 2A 4 Channel Solid State Relay Module High Level Trigger Black for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC: Amazon.com: Industrial & Scientific
1 Channel Relay Module Interface Board Shield for Arduino 5V Low Level Trigger One PIC AVR DSP ARM MCU DC AC 220V: Amazon.com: Industrial & Scientific
Amazon.com: Optocoupler-Isolated 2 Channel DC 5V Relay Module for Arduino Raspberry Pi MEGA 2560 DSP AVR PIC ARM MCU STM32, Electronic Experiment, Smart Home, Industrial Control, Robot : Industrial & Scientific
Amazon.com: SainSmart 5V 2-Channel Solid State Relay Board for Arduino Uno Duemilanove Mega2560 Mega1280 Arm Dsp Pic : Everything Else
Tolako 5v 16 Channel Relay Module Board for Arduino with Optocoupler Protection Works with Official Arduino Board: Amazon.com: Tools & Home Improvement
Amazon.com: SainSmart 16-Channel 12V Relay Module Board for Arduino DSP AVR PIC ARM : Electronics
Amazon.com: HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino : Industrial & Scientific
Amazon.com: Tolako 5v Relay Module 5V Indicator Light LED 1 Channel Relay Module for Arduino ARM PIC AVR MCU : Industrial & Scientific
5v Relay Module 1 Channel Relay Board for Raspberry Pi with Opto-Isolated High or Low Level Trigger 5v 1 Channel Relay Switch for Arduino: Amazon.com: Industrial & Scientific
Amazon.com: GUTK 4 Channel 5v Relay Shield Module, Four Channel Relay Control Board Relay Expansion Board for arduino UNO R3 mega 2560 : Electronics
Amazon.com: SainSmart 8-Channel 5V Solid State Relay Module Board for Arduino Uno Duemilanove MEGA2560 MEGA1280 ARM DSP PIC : Everything Else
Amazon.com: Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM : Electronics
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module for Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official Boards Shield (10PCS): Amazon.com: Industrial
Tanbupu 3PCS Relay Module 5V DC 1 Channel Relay Switch Board with OPTO-Isolated High Or Low Level Trigger Board for Arduino X-002-1-5VDC: Amazon.com: Industrial & Scientific
Amazon.com: 2 PCS 12V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino STM32 : Industrial & Scientific
ANMBEST Relay Module with Optocoupler High/Low Level Trigger for Arduino (3, 3V Relay 1 Channel): Amazon.com: Industrial & Scientific
Amazon.com: AC100V-250V 30A High Power 2-Channel Relay High Current DC5V High-Low Level Trigger Switch Module for Arduino : Electronics
Amazon.com: D-FLIFE 12V 16-Channel Relay Interface Board Module Optocoupler LED LM2576 Power for Arduino DIY Kit PiC ARM AVR (12V 16-Channel) : Electronics
