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Relay Module with Optocoupler 1 Channel High Low Level Trigger Relay Module Board AC 250V/10A DC 30V/10A (5V): Amazon.com: Industrial & Scientific
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ANMBEST Relay Module with Optocoupler High/Low Level Trigger for Arduino (3, 3V Relay 1 Channel): Amazon.com: Industrial & Scientific
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![Amazon.com: Arduino MKR Relay Proto Shield [TSX00003] : Industrial & Scientific](https://m.media-amazon.com/images/I/51XhYbE08tL._AC_UF894,1000_QL80_.jpg "Amazon.com: Arduino MKR Relay Proto Shield [TSX00003] : Industrial & Scientific")
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Amazon.com : UCTRONICS DC 12V Time Delay Relay Module for Smart Home, Tachograph, GPS, PLC Control, Industrial Control, Electronic Experiment, Arduino Robot : Electronics
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: ACEIRMC 5V 16-Channel Relay Interface Board Module Optocoupler LED LM2576 Power for Arduino DIY Kit PiC ARM AVR : Electronics
