![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: HiLetgo 12V 8 Channel Relay Module with OPTO-Isolated High and Low Level Trigger 8 Ways Relay Switch Module for Arduino : Industrial & Scientific](https://m.media-amazon.com/images/I/51kdfS6mstL._AC_SY580_.jpg)
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
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/S/aplus-media-library-service-media/6c1176e9-8597-4f0c-baa0-ce8a2e1c41b5.__CR0,0,970,600_PT0_SX970_V1___.png)
DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
![Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/I/511ZsH%2BiFKL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOURANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA287%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific
![Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific](https://m.media-amazon.com/images/I/51bSfIeo5rL._AC_SY350_.jpg)
Amazon.com: HiLetgo 12V 1 Channel Relay Module With Optocoupler Isolation Support High or Low Level Trigger : Industrial & Scientific
![NOYITO 8-Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control Industrial Control (8 Channel 12V): Amazon.com: Industrial & Scientific NOYITO 8-Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control Industrial Control (8 Channel 12V): Amazon.com: Industrial & Scientific](https://images-na.ssl-images-amazon.com/images/I/81XlA4+G6OL._AC_UL600_SR600,600_.jpg)
NOYITO 8-Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control Industrial Control (8 Channel 12V): Amazon.com: Industrial & Scientific
![NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (5V, 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) (5V, Red): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/81-j7-RH1yL._SX522_.jpg)
NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (5V, Red): Amazon.com: Industrial & Scientific
![Amazon.com: DC 12V Adjustable Times Switch Module Signal Trigger Turn Off Timer Delay Switch Module 0~25Seconds Time Delay : Tools & Home Improvement Amazon.com: DC 12V Adjustable Times Switch Module Signal Trigger Turn Off Timer Delay Switch Module 0~25Seconds Time Delay : Tools & Home Improvement](https://m.media-amazon.com/images/I/41KCe3nceZL._AC_SY580_.jpg)
Amazon.com: DC 12V Adjustable Times Switch Module Signal Trigger Turn Off Timer Delay Switch Module 0~25Seconds Time Delay : Tools & Home Improvement
![Amazon.com: CENTAURUS 5PCS NE555 Delay Relay Shield Timer Switch Adjustable Module 0 to 10 Second DC 12V NE555 Timer Delay Converter for Automotive Control System Electrical Equipment : Tools & Home Improvement Amazon.com: CENTAURUS 5PCS NE555 Delay Relay Shield Timer Switch Adjustable Module 0 to 10 Second DC 12V NE555 Timer Delay Converter for Automotive Control System Electrical Equipment : Tools & Home Improvement](https://m.media-amazon.com/images/I/41PjRIQ9SZL._AC_.jpg)
Amazon.com: CENTAURUS 5PCS NE555 Delay Relay Shield Timer Switch Adjustable Module 0 to 10 Second DC 12V NE555 Timer Delay Converter for Automotive Control System Electrical Equipment : Tools & Home Improvement
![Amazon.com: 12V DC 120 Amp Split Charge Relay Switch - 4 Terminal Relays for Truck Boat Marine : Automotive Amazon.com: 12V DC 120 Amp Split Charge Relay Switch - 4 Terminal Relays for Truck Boat Marine : Automotive](https://m.media-amazon.com/images/I/41z8rUVDE2L._AC_SY350_QL15_.jpg)
Amazon.com: 12V DC 120 Amp Split Charge Relay Switch - 4 Terminal Relays for Truck Boat Marine : Automotive
![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/51UfPuk8SoL._AC_SY580_.jpg)
AEDIKO 4pcs Relay Module DC 12V Relay Board 1 Channel with Optocoupler Isolation Support High or Low Level: Amazon.com: Industrial & Scientific
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51L9MoaumeL._AC_SY350_.jpg)
DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
![Amazon.com: 5V 12V low level trigger 1 Channel Relay Module interface Board Shield (Color : 12V) : Industrial & Scientific Amazon.com: 5V 12V low level trigger 1 Channel Relay Module interface Board Shield (Color : 12V) : Industrial & Scientific](https://m.media-amazon.com/images/I/61mIkwykAAL._AC_SY355_.jpg)
Amazon.com: 5V 12V low level trigger 1 Channel Relay Module interface Board Shield (Color : 12V) : Industrial & Scientific
![NOYITO 4 Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control (4-Channel 12V): Amazon.com: Industrial & Scientific NOYITO 4 Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control (4-Channel 12V): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/415+TmJ7xTL._AC_SY1000_.jpg)
NOYITO 4 Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control (4-Channel 12V): Amazon.com: Industrial & Scientific
![NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (5V, 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) (5V, Red): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/81R9+P72G3L._SX466_.jpg)
NOYITO 1 Channel Relay Module with Isolated Optocoupler 5V 12V 24V High Low Level Trigger Module Triggered (Pack of 3) (5V, Red): Amazon.com: Industrial & Scientific
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/612qjqEq16L.jpg)
DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
![Amazon.com: QIAONAI sh84 50pcs 5V/12V/24V Low Level Trigger 1 Channel Relay Module Interface Board Shield for PIC AVR DSP ARM MCU Integrated Circuit (Color : 24V) : Industrial & Scientific Amazon.com: QIAONAI sh84 50pcs 5V/12V/24V Low Level Trigger 1 Channel Relay Module Interface Board Shield for PIC AVR DSP ARM MCU Integrated Circuit (Color : 24V) : Industrial & Scientific](https://m.media-amazon.com/images/I/513HSCENY0L._AC_SX466_.jpg)
Amazon.com: QIAONAI sh84 50pcs 5V/12V/24V Low Level Trigger 1 Channel Relay Module Interface Board Shield for PIC AVR DSP ARM MCU Integrated Circuit (Color : 24V) : Industrial & Scientific
![Relay Module One Way 30A Optocoupler Isolation Relay Module High Power Relay High/Low Level Trigger YYG-2(12VDC): Amazon.com: Industrial & Scientific Relay Module One Way 30A Optocoupler Isolation Relay Module High Power Relay High/Low Level Trigger YYG-2(12VDC): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61IKtXrcg9L._SX342_.jpg)
Relay Module One Way 30A Optocoupler Isolation Relay Module High Power Relay High/Low Level Trigger YYG-2(12VDC): Amazon.com: Industrial & Scientific
![Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific](https://m.media-amazon.com/images/I/51pCgr28gSL._AC_.jpg)
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific
![Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Trigger Relay 6-24VDC: Amazon.com: Industrial & Scientific Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Trigger Relay 6-24VDC: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51sZ6PTz6vL._AC_SY1000_.jpg)
Relay Module, 4 Channel Flip-Flop DC 12V Bistable Self-Locking Relay Module Low Pulse Trigger Relay 6-24VDC: Amazon.com: Industrial & Scientific
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/518iDR6L6hL._AC_SY1000_.jpg)
DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
![5V/12V/24V Relay Module,1 Channel Optocoupler Relay Module Board High & Low Trigger (5V): Amazon.com: Industrial & Scientific 5V/12V/24V Relay Module,1 Channel Optocoupler Relay Module Board High & Low Trigger (5V): Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61aRptYx58L._SX342_.jpg)
5V/12V/24V Relay Module,1 Channel Optocoupler Relay Module Board High & Low Trigger (5V): Amazon.com: Industrial & Scientific
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/61Q8pVa0w5L.jpg)
DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific
![DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific DC 12V Circuit Trigger Switch Relay Single Channel Bistable Control Relay Module: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/71AObQWaeAL.jpg)