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Amazon.com: DAOKI 5 PCS 5v Relay Module for Arduino ARM PIC AVR MCU 5V Indicator Light LED 1 Channel Relay Module Works with Official Arduino Boards : Industrial & Scientific
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5V/12V/24V 8 Channel Optocoupler Relay Module Board with High/Low and Trigger Power Indicator Light(24V): Amazon.com: Industrial & Scientific
Amazon.com: MakerHawk Time Delay Relay, 12V 5V USB Relay Module 6-30V Delay Controller Board Delay-Off Cycle Timer Control Switch with LCD Display Support Micro USB 5V Power Supply : Tools & Home
NOYITO 8-Channel Relay Module High Low Level Trigger with Optocoupler Isolation Load DC 30V AC 250V 10A for PLC Automation Equipment Control Industrial Control (8 Channel 12V): Amazon.com: Industrial & Scientific
NOYITO 4-Channel Relay Module 5V 12V 24V High Low Level Trigger with Optocoupler Isolation Relay Load AC 250V 10A DC 30V 10A (DC 5V, Red): Amazon.com: Industrial & Scientific
NOYITO 4-Channel Relay Module DC 5V 12V 24V Self-Locking Triggering Interlocking High Low Level Trigger for PLC Industrial Control (12V): Amazon.com: Industrial & Scientific
1pcs 5v 12v 1 2 4 6 8 channel relay module with optocoupler. Relay Output 1 2 4 6 8 way relay module for arduino In stock,12V 1 channel relay - - Amazon .com
5V DC Delay Relay Delay with Timer Turn on/Delay Turn Off Switch Module (5V) - - Amazon.com
5V 12V 24V 1 Channel DC Relay Module Solid State Low Level SSR Relay (5V): Amazon.com: Industrial & Scientific
Solid State Relay Module, 1-Channel DC 5/12V High Level Trigger Solid State Relay Module 250VAC 2A Output with Fuse (5V): Amazon.com: Industrial & Scientific