Keyestudio 4 channel 5V Relay Shield module for Arduino UNO R3
$8.50
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Keyestudio 4 channel 5V Relay Shield module for Arduino UNO R3
$8.50
Shield / expansion board from Keyestudio. Original product page: https://www.keyestudio.com/products/keyestudio-4-channel-5v-relay-shield-module-for-arduino-uno-r3