![Amazon.com: Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi : Electronics Amazon.com: Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi : Electronics](https://m.media-amazon.com/images/I/51LXXyt27bL._AC_SY580_.jpg)
Amazon.com: Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi : Electronics
![Amazon.com: 2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay : Patio, Lawn & Garden Amazon.com: 2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay : Patio, Lawn & Garden](https://m.media-amazon.com/images/I/51PM6eb7VyL._AC_.jpg)
Amazon.com: 2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay : Patio, Lawn & Garden
![3v Relay Board Raspberry Pi Arduino Relay Module 1 Channel Opto-Isolate High Level Trigger for IOT ESP8266 Microcontrollers Development Board: Amazon.com: Industrial & Scientific 3v Relay Board Raspberry Pi Arduino Relay Module 1 Channel Opto-Isolate High Level Trigger for IOT ESP8266 Microcontrollers Development Board: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51xyObVc2tL._AC_SY1000_.jpg)
3v Relay Board Raspberry Pi Arduino Relay Module 1 Channel Opto-Isolate High Level Trigger for IOT ESP8266 Microcontrollers Development Board: Amazon.com: Industrial & Scientific
![Yuecoom 12V Relay Module Latching Switch Board, DC 6-24V Switch Latching Relay Module, Micro 6-24V Relais Flip-Flop Latch Relay Module Bistable Self Locking Switch Relay Board: Amazon.com: Industrial & Scientific Yuecoom 12V Relay Module Latching Switch Board, DC 6-24V Switch Latching Relay Module, Micro 6-24V Relais Flip-Flop Latch Relay Module Bistable Self Locking Switch Relay Board: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41U-hBlXq1L._AC_.jpg)
Yuecoom 12V Relay Module Latching Switch Board, DC 6-24V Switch Latching Relay Module, Micro 6-24V Relais Flip-Flop Latch Relay Module Bistable Self Locking Switch Relay Board: Amazon.com: Industrial & Scientific
![Amazon.com: 4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler : Industrial & Scientific Amazon.com: 4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler : Industrial & Scientific](https://m.media-amazon.com/images/I/71aGbUlrehL.jpg)
Amazon.com: 4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler : Industrial & Scientific
![Amazon.com: Ingcool Compatible with Raspberry Pi Expansion Board Power Relay Module Kits for Raspberry Pi 4B/3B+/3B/2B/ A+/B+ 5A 250V AC/ 5A 30V DV : Electronics Amazon.com: Ingcool Compatible with Raspberry Pi Expansion Board Power Relay Module Kits for Raspberry Pi 4B/3B+/3B/2B/ A+/B+ 5A 250V AC/ 5A 30V DV : Electronics](https://m.media-amazon.com/images/I/4158OHantaL._AC_SY580_.jpg)
Amazon.com: Ingcool Compatible with Raspberry Pi Expansion Board Power Relay Module Kits for Raspberry Pi 4B/3B+/3B/2B/ A+/B+ 5A 250V AC/ 5A 30V DV : Electronics
![Amazon.com: Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board : Industrial & Scientific Amazon.com: Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board : Industrial & Scientific](https://m.media-amazon.com/images/I/81UwS3jrInL.jpg)
Amazon.com: Weewooday 15 Pieces 5V Relay Module 1- Channel Relay Control Boards with Optocoupler Isolation High and Low Level Trigger Expansion Board : Industrial & Scientific
![Amazon.com: HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Electronics Amazon.com: HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Electronics](https://m.media-amazon.com/images/I/61FfjAPCMlL.jpg)
Amazon.com: HiLetgo 5V 4 Channel Relay Shield for UNO R3 Relay Shield Four Channel Relay Shield for UNO R3 : Electronics
![Amazon.com: GeeekPi Raspberry Pi Expansion Board 4 Channel Relay Board Module Power Relay Module for Raspberry Pi 4B & Raspberry Pi 3 Model B+ & Raspberry Pi 3/2 Model B (No Programming Amazon.com: GeeekPi Raspberry Pi Expansion Board 4 Channel Relay Board Module Power Relay Module for Raspberry Pi 4B & Raspberry Pi 3 Model B+ & Raspberry Pi 3/2 Model B (No Programming](https://m.media-amazon.com/images/I/51klI+RpCPL._AC_SY580_.jpg)
Amazon.com: GeeekPi Raspberry Pi Expansion Board 4 Channel Relay Board Module Power Relay Module for Raspberry Pi 4B & Raspberry Pi 3 Model B+ & Raspberry Pi 3/2 Model B (No Programming
![Amazon.com: ARCELI 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics Amazon.com: ARCELI 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics](https://m.media-amazon.com/images/I/51lrW78J8RL._AC_.jpg)
Amazon.com: ARCELI 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics
![Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM: Amazon.com: Industrial & Scientific Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61fC4SIbW7L.jpg)
Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM: Amazon.com: Industrial & Scientific
![Amazon.com: 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics Amazon.com: 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics](https://m.media-amazon.com/images/I/51PK-Y7M7dL._AC_.jpg)
Amazon.com: 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics
![AEDIKO 4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level: Amazon.com: Industrial & Scientific AEDIKO 4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71TfqCqH8PL.jpg)
AEDIKO 4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level: Amazon.com: Industrial & Scientific
![Amazon.com: ACEIRMC 10pcs 12v Relay Board for Raspberry Arduino Relay Module 1 Channel Opto-Isolated High or Low Level Trigger (12V) : Industrial & Scientific Amazon.com: ACEIRMC 10pcs 12v Relay Board for Raspberry Arduino Relay Module 1 Channel Opto-Isolated High or Low Level Trigger (12V) : Industrial & Scientific](https://m.media-amazon.com/images/I/51WWUKATR2L._AC_SY1000_.jpg)