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Optocoupler Relay Module, Humanized Interface Design 4 Channel Relay Module, for Ac 250V/10A, Dc 30V/10A 5Ma Trigger Current 5V, 12V, 24V 73 * 50 * 18.5Mm (5V): Amazon.com: Industrial & Scientific
1Pc Relay Network Ethernet Relay Controller Module Control Board LAN WAN Network Web Server with RJ 45 Interface + 8 Channel Relay Module for Smart Home Remote Control: Amazon.com: Industrial & Scientific
4-Channel Relay Module, USB Multifunction Relay Module, Large Carrying Capacity 10A, Compact Size for Laboratory Factory (12v): Amazon.com: Industrial & Scientific
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
Amazon.com: HiLetgo 12V 4 Channel Relay Module with OPTO-Isolated Support High and Low Level Trigger : Industrial & Scientific
Amazon.com: 2PCS 24V Relay Module with Optocoupler Isolation Support High and Low Level Trigger Relay Red Board (8 Channel 24 Relay) : Industrial & Scientific
Decoder Relay Module AD22B04 12V 4 Channel DTMF Tone Phone Remote Controller PLC Switch Module: Amazon.com: Industrial & Scientific
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
Amazon.com: ALMOCN 3Pcs DC 5V 4 Channel Relay Module with Optocoupler Support High/Low Level Trigger Relay Red Board4 channel 5V) : 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
Relay Module YYG-4 High Power 4 Channel Relay Module Relay Shield Module Control Board Optocoupler Isolation 30A(DC 5V): Amazon.com: Tools & Home Improvement
Amazon.com: YWBL-WH 30A 4 Channel Relay Module Expansion Board with Optocoupler for Arduino Raspberry Pi DSP AVR PIC ARM (5VDC) : Electronics
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: WMYCONGCONG 4 PCS XH-M131 Photoresistor Relay Module DC 12V Light Control Switch Photoresistor Relay Module Detection Sensor Automatic Light Control Switch with Cable : Industrial & Scientific
3.3V 4 Channel Relay Module High and Low Level Trigger Dual Optocoupler Isolation 3.3V Relay Module: Amazon.com: Industrial & Scientific
Amazon.com: SunFounder 5V 8 Channel Relay Shield Module for Arduino R3 2560 1280 ARM PIC AVR STM32 Raspberry Pi 3, 2 Model B & B+ : Electronics
Amazon.com: MELIFE 2 Pack 5V 4 Channel Relay Module DC 5V Relay with Optocoupler for R3 MEGA 2560 Project 1280 DSP ARM PIC AVR STM32. : Everything Else
Multifunction Time Relay, Time Delay Relay Delay Relay Board DC 12V 8CH LED Multifunction Digital Delay Time Cycle Timing Relay Switch Module: Amazon.com: Industrial & Scientific
DC 5V 4 Channel Relay Module with Opto Isolation Supports High and Low Level Trigger with Optocoupler for Arduino: Amazon.com: Industrial & Scientific
Amazon.com: Electronics-Salon 4 DPDT Signal Relay Module Board, DC 12V Version, for Arduino Raspberry-Pi 8051 PIC. : Electronics
Amazon.com: IIVVERR DC 5V 8 Channels Optocoupler Shielded Relay Module for AVR ARM PIC SCM (Módulo de relé apantallado optoacoplador de 5 canales DC 5V para AVR ARM PIC SCM : Everything Else
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
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
5V 4 Channel Relay Module 4-Channel Relay Control Board with Optocoupler Relay Output 4 Way Relay Module for Arduino: Amazon.com: Industrial & Scientific
