Relay Shield for Arduino Uno, 4 relays (Assembled)
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Four channel Relay Shield 5V 4 Channel Relay Shield Module for Arduino UNO R3
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Home Automation - How to Add Relays to Arduino : 10 Steps - Instructables
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Deek-Robot DK Relay Shield V1.3 XBee Kit (Shield) - buy at digitec
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2PCS DC 5V 4 Channel Relay Module Shield Terminal Relay Board for Arduino UNO R3
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2 Channel High Current Arduino Relay Shield
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How to use 4 channel Arduino Relay Shield (with code)
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Arduino 4 Relay Shield - 4 relays 30V / 2A Botland - Robotic Shop
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Arduino Nano Family Relay Shield 2 Channel from BRLAB ELECTRONICS on Tindie
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