![Amazon.com: HiLetgo 5V 1 Channel Self Locking Bistable One Button Start/Stop Self-Locking Relay Module Relay Switch for MCU Control : Industrial & Scientific Amazon.com: HiLetgo 5V 1 Channel Self Locking Bistable One Button Start/Stop Self-Locking Relay Module Relay Switch for MCU Control : Industrial & Scientific](https://m.media-amazon.com/images/I/61DS5SLDSqL.jpg)
Amazon.com: HiLetgo 5V 1 Channel Self Locking Bistable One Button Start/Stop Self-Locking Relay Module Relay Switch for MCU Control : Industrial & Scientific
![Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive](https://m.media-amazon.com/images/I/41jniP1cmVL.jpg)
Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive
![Relay Module with Optocoupler 1 Channel High Low Level Trigger Relay Module Board AC 250V/10A DC 30V/10A (5V): Amazon.com: Industrial & Scientific Relay Module with Optocoupler 1 Channel High Low Level Trigger Relay Module Board AC 250V/10A DC 30V/10A (5V): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/41u2w4Yml6L._AC_SY580_.jpg)
Relay Module with Optocoupler 1 Channel High Low Level Trigger Relay Module Board AC 250V/10A DC 30V/10A (5V): Amazon.com: Industrial & Scientific
![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/51+GrUjQPeL._AC_SY1000_.jpg)
Xiuxin 2pcs 5V 8 Channel Relay Module Board for Arduino PIC AVR DSP ARM: Amazon.com: Industrial & Scientific
![Amazon.com: 2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board : Industrial & Scientific Amazon.com: 2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board : Industrial & Scientific](https://m.media-amazon.com/images/I/5130px1JgJL._AC_.jpg)
Amazon.com: 2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board : Industrial & Scientific
![Amazon.com: HiLetgo 5V 8 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger : Industrial & Scientific Amazon.com: HiLetgo 5V 8 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/I/51yC2joh9pL._AC_.jpg)
Amazon.com: HiLetgo 5V 8 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger : Industrial & Scientific
![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 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](https://m.media-amazon.com/images/I/71lexBCo55S.jpg)
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
![Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive](https://m.media-amazon.com/images/I/41jniP1cmVL._AC_SY580_.jpg)
Amazon.com: Lysignal 1 Channel 5V Relay Module Relay Board with Indicator Light LED for SCM Household Appliance Control : Automotive
![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/51UMIBjHzSL._AC_SY350_.jpg)
Amazon.com: 4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler : Industrial & Scientific
![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
![AEDIKO 8 Channel Relay Module DC 5V Relay Board with OPTO-Isolated Support High or Low Level Trigger: Amazon.com: Industrial & Scientific AEDIKO 8 Channel Relay Module DC 5V Relay Board with OPTO-Isolated Support High or Low Level Trigger: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/81jrsEVDajL.jpg)
AEDIKO 8 Channel Relay Module DC 5V Relay Board with OPTO-Isolated Support High or Low Level Trigger: Amazon.com: Industrial & Scientific
![Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics](https://m.media-amazon.com/images/I/51uyxCDmlPL._AC_SY580_.jpg)
Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
![Amazon.com: ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics Amazon.com: ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics](https://m.media-amazon.com/images/I/51xmRDGYLhL._AC_SY580_.jpg)
Amazon.com: ELEGOO 4 Channel DC 5V Relay Module with Optocoupler Compatible with Arduino UNO R3 MEGA 2560 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics
![Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics](https://m.media-amazon.com/images/I/51yu+7+fzbL._AC_SY580_.jpg)
Amazon.com: 5V 16 Channel USB Relay Module Computer Switch Control, USB Control Switch with PCB Board/High Sensitivity : Electronics
![Amazon.com: JBtek 8 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](https://m.media-amazon.com/images/I/51g9tXU1NEL._AC_SY580_.jpg)
Amazon.com: JBtek 8 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
![ALMOCN 6Pcs DC 5V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger - - Amazon.com ALMOCN 6Pcs DC 5V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger - - Amazon.com](https://m.media-amazon.com/images/I/51+Q9MVDriL._AC_SY580_.jpg)
ALMOCN 6Pcs DC 5V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger - - Amazon.com
![Amazon.com: KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B : Electronics Amazon.com: KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B : Electronics](https://m.media-amazon.com/images/I/41zRF9dn-2L._AC_SY580_.jpg)
Amazon.com: KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B : Electronics
![Amazon.com: WINGONEER 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics Amazon.com: WINGONEER 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics](https://images-na.ssl-images-amazon.com/images/I/61AbN0I30LL._AC_UL600_SR600,600_.jpg)
Amazon.com: WINGONEER 5PCS KY-019 5V One Channel Relay Module Board Shield for PIC AVR DSP ARM for Relay : Electronics
![Geekstory 5PCS 2 Channel 5V Relay Module 10A with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR DSP Electronic STM32 Raspberry Pi: Amazon.com: Tools Geekstory 5PCS 2 Channel 5V Relay Module 10A with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR DSP Electronic STM32 Raspberry Pi: Amazon.com: Tools](https://m.media-amazon.com/images/I/61Fz8u7HwKL.jpg)
Geekstory 5PCS 2 Channel 5V Relay Module 10A with Optocoupler Low Level Trigger Expansion Board for Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR DSP Electronic STM32 Raspberry Pi: Amazon.com: Tools
![Amazon.com: Tnisesm/5pcs Coil DPDT PCB Power Relay DC 5V 8 Pins Mini Power Relay PCB Relay 4078F-8P-5V-BK : Automotive Amazon.com: Tnisesm/5pcs Coil DPDT PCB Power Relay DC 5V 8 Pins Mini Power Relay PCB Relay 4078F-8P-5V-BK : Automotive](https://m.media-amazon.com/images/I/61vwq1B+j6L.jpg)
Amazon.com: Tnisesm/5pcs Coil DPDT PCB Power Relay DC 5V 8 Pins Mini Power Relay PCB Relay 4078F-8P-5V-BK : Automotive
![Amazon.com: Yizhet 5V 2 Channel-Relay DC 5V 230V Relay Shield Module Control Board with Optocoupler for Raspberry Pi PIC AVR MCU DSP ARM TTL Logic (1 PCS) : Industrial & Scientific Amazon.com: Yizhet 5V 2 Channel-Relay DC 5V 230V Relay Shield Module Control Board with Optocoupler for Raspberry Pi PIC AVR MCU DSP ARM TTL Logic (1 PCS) : Industrial & Scientific](https://m.media-amazon.com/images/I/51GJae3O1VL._AC_SY580_.jpg)
Amazon.com: Yizhet 5V 2 Channel-Relay DC 5V 230V Relay Shield Module Control Board with Optocoupler for Raspberry Pi PIC AVR MCU DSP ARM TTL Logic (1 PCS) : 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: 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](https://m.media-amazon.com/images/I/41KROIy+uGL._AC_SY580_.jpg)