![Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific](https://m.media-amazon.com/images/I/71sYU7OiTKL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific
![Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific](https://m.media-amazon.com/images/I/71ffTXEcdWL._AC_UF350,350_QL80_.jpg)
Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific
![Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific](https://m.media-amazon.com/images/I/81FYpLwFugL.jpg)
Amazon.com: AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific
![NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (12V, Red): Amazon.com: Industrial & Scientific NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (12V, Red): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/81-j7-RH1yL.jpg)
NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (12V, Red): Amazon.com: Industrial & Scientific
![Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific](https://m.media-amazon.com/images/I/61xDMBKPIfL.jpg)
Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific
![AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific - Amazon.com AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific - Amazon.com](https://m.media-amazon.com/images/I/71PY7hqzr5L.jpg)
AITRIP 8 Pack 3V 1 Channel Relay Power Switch Module with Optocoupler Opto Isolation High Level Trigger for IOT ESP8266 Development Board : Industrial & Scientific - Amazon.com
![Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/I/71N3vgfS6FL.jpg)
Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
![ANMBEST Relay Module with Optocoupler High/Low Level Trigger for Arduino (3, 3V Relay 1 Channel): Amazon.com: Industrial & Scientific ANMBEST Relay Module with Optocoupler High/Low Level Trigger for Arduino (3, 3V Relay 1 Channel): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71DPGqiZmJL._AC_UF1000,1000_QL80_.jpg)
ANMBEST Relay Module with Optocoupler High/Low Level Trigger for Arduino (3, 3V Relay 1 Channel): Amazon.com: Industrial & Scientific
![Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71Qg1T4UL8L._AC_UF350,350_QL80_.jpg)
Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific
![Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51eJOSPdUTL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFIVE%2CBottomLeft%2C360%2C-6_SR600%2C315_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific
![Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/I/71J7MeakRAL._AC_UF894,1000_QL80_.jpg)
Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
![Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific](https://m.media-amazon.com/images/I/614fn1qQurL.jpg)
Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific
![Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific](https://m.media-amazon.com/images/I/61KpJlneMzL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Trigger Module, 5V/12V 2 Channel Relay Module with Optocoupler Isolation High&Low Level Trigger Relay Extension Board(5V) : Industrial & Scientific
![10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board: Amazon.com: Industrial & Scientific 10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71J1QfqiiUL._AC_UF894,1000_QL80_.jpg)
10Pcs 1 Channel Optocoupler Isolation Module 12V PC817 EL817 Photoelectric 1 Way Opto PNP NPN Signal Converter Rail Holder PLC Drive Motor Board: Amazon.com: Industrial & Scientific
![Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific](https://m.media-amazon.com/images/I/61wAH2TKCTL._AC_UF350,350_QL80_.jpg)
Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific
![Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific](https://m.media-amazon.com/images/I/51L6HPqaSRL.jpg)
Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific
![Optokopplermodul Relay Einkanaliger High & Low Trigger 5V / 12V / 24V (12V) : Amazon.com.be: Industrial & Scientific Optokopplermodul Relay Einkanaliger High & Low Trigger 5V / 12V / 24V (12V) : Amazon.com.be: Industrial & Scientific](https://m.media-amazon.com/images/I/51kxC44pvDL._AC_SY350_.jpg)
Optokopplermodul Relay Einkanaliger High & Low Trigger 5V / 12V / 24V (12V) : Amazon.com.be: Industrial & Scientific
![Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/S/aplus-media/sc/e69059df-cfc9-44fa-9777-9a3716c8dd32.__CR0,0,970,600_PT0_SX970_V1___.jpg)
Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
![Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61Yp9MQyQPL._AC_UF1000,1000_QL80_.jpg)
Tanbupu 3PCS Relay Module 12V DC 1 Channel Relay Optocoupler Isolation Switch Board with OPTO-Isolated Support High Or Low Level Trigger Board for Arduino X-002-1-12VDC: Amazon.com: Industrial & Scientific
![Amazon.com: OONO DPST 1NO 1NC 8Amp Power Relay Module, AC 110V 115V 120V Control Voltage : Industrial & Scientific Amazon.com: OONO DPST 1NO 1NC 8Amp Power Relay Module, AC 110V 115V 120V Control Voltage : Industrial & Scientific](https://m.media-amazon.com/images/I/61jQwttVWZL.jpg)
Amazon.com: OONO DPST 1NO 1NC 8Amp Power Relay Module, AC 110V 115V 120V Control Voltage : Industrial & Scientific
![Amazon.com: Optical Isolator Module, 24V Voltage Level Current Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optoisolator 12V PNP NPN Signal Converter PC817 Optocoupler Optoisolator : Industrial & Scientific Amazon.com: Optical Isolator Module, 24V Voltage Level Current Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optoisolator 12V PNP NPN Signal Converter PC817 Optocoupler Optoisolator : Industrial & Scientific](https://m.media-amazon.com/images/I/61Nxq7NjHKL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Optical Isolator Module, 24V Voltage Level Current Converter Module 80KHz 1-Channel Optocoupler Photoelectric Optoisolator 12V PNP NPN Signal Converter PC817 Optocoupler Optoisolator : Industrial & Scientific
![Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific](https://m.media-amazon.com/images/I/61q9+zjdzdL._AC_UF350,350_QL80_.jpg)
Amazon.com: 5 PCS Optocoupler Isolation Board, Icstation DC 12V Optocoupler Isolation Module EL817 1 Channel Opto PNP NPN Signal Converter, Isolator High-Level Trigger 80KHz : Industrial & Scientific
![Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71ERasz28BL._AC_UF1000,1000_QL80_.jpg)
Optocoupler Isolator Board, PNP to NPN 24V to 5V Level Signal Converter Module for DIY: Amazon.com: Industrial & Scientific
![Optokopplermodul Relay Einkanaliger High & Low Trigger 5V / 12V / 24V (12V) : Amazon.com.be: Industrial & Scientific Optokopplermodul Relay Einkanaliger High & Low Trigger 5V / 12V / 24V (12V) : Amazon.com.be: Industrial & Scientific](https://m.media-amazon.com/images/I/41+Dq4bd0IL._AC_SY1000_.jpg)