Photo 1 of ?KEAcvise 4-Pack 5V 1-Channel Relay Module - Optocoupler Isolated High/Low Level Trigger Switch for Arduino/Home Automation/Industrial Control/IoT Devices (4-Pack)?

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Photo 1 of ?KEAcvise 4-Pack 5V 1-Channel Relay Module - Optocoupler Isolated High/Low Level Trigger Switch for Arduino/Home Automation/Industrial Control/IoT Devices (4-Pack)?Photo 2 of ?KEAcvise 4-Pack 5V 1-Channel Relay Module - Optocoupler Isolated High/Low Level Trigger Switch for Arduino/Home Automation/Industrial Control/IoT Devices (4-Pack)?