Relay Shield for Arduino Uno, 4 relays (Assembled)

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4-Channel General Purpose SPDT Relay Shield + 4 GPIO with IoT Interface - NCD Store

Relay Shield for Arduino V2.1

Arduino 4 Relays Shield — Arduino Online Shop

The Arduino 4 Relays Shield works with Arduino Uno, Uno SMD, Mega, Zero, Due, or Leonardo. Each relay can be independently controlled and provides a 2 pole changeover. Doesn't need external power, works with the power input on your Arduino board. Includes a plastic separator to electrically isolate the relays from the microcontroller. Connect other sensors and actuators through the shield’s Molex connectors.

Arduino 4 Relays Shield A000110

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Relay Shield v3 Seeed Studio Wiki

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Relay Shield for Arduino Uno, 4 relays (Assembled)

DAOKI 4 Channel 5v Relay Shield Module for Arduino UNO R3 Relay Shield Interface 4 Four Channel for PIC AVR DSP ARM MCU Arduino UNO R3: : Industrial & Scientific

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Arduino 4 Relays Shield