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KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM for arduino Relay

Javino 1-10Pcs 5V 12V 24V Low Level Trigger 1 Channel Relay Module Interface Board Shield for PIC AVR DSP ARM MCU Arduino

3.3V 5V 12V 24V 1 Channel Relay Module High And Low Level Trigger Dual Optocoupler Isolation Relay Module Board

1 2 4 8 Channel Relay Module Board Shield 5V 12V 24V with Optocoupler Support High and Low Level Trigger for Arduino

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DC 3.3V 5V 12V 24V 1 Channel Relay Module With Optocoupler Shield Board High Low Level Trigger Power Supply Module For Arduino

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DC 5V 12V 24V 30A High Power 1 Channel Relay Module With Optocoupler Isolation board High Low Level Trigger Relay for Arduino

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KY-019 5V One 1 Channel Relay Module Board Shield For PIC AVR DSP ARM For Arduino Relay

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5V 12V One 1 Channel Relay Module Board Shield with optocoupler Support High and Low Level Trigger