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3.3V 4 Channel Relay Module High and Low Level Trigger Dual Optocoupler Isolation 3.3V Relay Module: Amazon.com: Industrial & Scientific
ANMBEST 5PCS 3V Relay Module with Optocoupler High Level Trigger Expansion Board for Raspberry Pi Arduino: Amazon.com: Industrial & Scientific
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Amazon.com: Timer Control Relay, 3V 3.7V 4.5v 5v 6v 7.4V Adjustable Cycle Time Delay Switch Module for Automotive and Lamp Accessory Applications : Industrial & Scientific
Songhe DC 1 Channel Optocoupler 3V/3.3V Relay High Level Driver Module Isolated Drive Control Board 3V/3.3V Relay Module for Arduino (Pack of 5): Amazon.com: Industrial & Scientific