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Amazon.com: Electronics-Salon 4 DPDT Signal Relay Module Board, DC 12V Version, for Arduino Raspberry-Pi 8051 PIC. : Electronics
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Amazon.com: 2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay : Industrial & Scientific
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Amazon.com: Huayao 2pcs 4 Channel DC 5V Relay Module with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics
New 5V 10A USB 8 Channel Relay Upper Computer ICSE014A 8-Channel Relay Module: Amazon.com: Industrial & Scientific
DC 12V 4 Channel Relay Module Optocoupler for Arduino ARM AVR DSP PIC MSP AC 250V 10A DC 30V Low Level Signal MCU PLC Control: Amazon.com: Industrial & Scientific
Decoder Relay Module AD22B04 12V 4 Channel DTMF Tone Phone Remote Controller PLC Switch Module: Amazon.com: Industrial & Scientific
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YWBL-WH Relay Module One Way 30A Optocoupler Isolation Relay Module High Power Relay High/Low Level Trigger YYG-2(5VDC) (1): Amazon.com: Industrial & Scientific
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Amazon.com: ILAME 1 2 4 6 8 Channel 12V Relay Module Board Shield with Optocoupler Support High and Low Level Trigger for Arduino (Color : 4 Channel 12V) : Industrial & Scientific
R223C16 16-Channel Relay Board DB9 Relay Module Female Interface Serial Port Smart Module for Parallel Industrial Electronics: Amazon.com: Industrial & Scientific
Relay Board, Keenso Relay Module 4 Channel with Optocoupler Low Level Trigger Expansion Board for 5V/12V/24V(5V): Amazon.com: Industrial & Scientific
Amazon.com: Relay Module 4 Ways 5V/10A/250VAC 10A/30VDC Relays Support USB Power Supply LED Indicator Transition Protection 8 Bit Microcontroller Chip Relay Switch : Industrial & Scientific
