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Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated  Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V  : Industrial & Scientific
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific

Amazon.com: SFAFT 1pcs 2 Channel Relay Module 5V 2-Channel Relay modules  5VDC 2 Road Relay Module Control Board with optocoupler : Industrial &  Scientific
Amazon.com: SFAFT 1pcs 2 Channel Relay Module 5V 2-Channel Relay modules 5VDC 2 Road Relay Module Control Board with optocoupler : Industrial & Scientific

Amazon.com: JBtek 8 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP  AVR PIC ARM : Electronics
Amazon.com: JBtek 8 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics

Amazon.com: HiLetgo 2pcs DC 24V 2 Channel Relay Module with Isolated  Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 24V  : Industrial & Scientific
Amazon.com: HiLetgo 2pcs DC 24V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 24V : Industrial & Scientific

Good BNTai 4 Channel Relay Module 1 SPDT DIN Rail Mount 12VDC/AC Interface Relay  Module (4Channel ACDC12V): Amazon.com: Industrial & Scientific
Good BNTai 4 Channel Relay Module 1 SPDT DIN Rail Mount 12VDC/AC Interface Relay Module (4Channel ACDC12V): Amazon.com: Industrial & Scientific

5V 2 CH 2CH Channel Relay Module Expansion Board for Arduino Low Level  Optocoupler Triggered 2 Way Relay Switch: Amazon.com: Industrial &  Scientific
5V 2 CH 2CH Channel Relay Module Expansion Board for Arduino Low Level Optocoupler Triggered 2 Way Relay Switch: Amazon.com: Industrial & Scientific

10PCS 2 Channel 5V Relay Module 2Channel Relay for ARM PIC AVR DSP  Electronic: Amazon.com: Industrial & Scientific
10PCS 2 Channel 5V Relay Module 2Channel Relay for ARM PIC AVR DSP Electronic: Amazon.com: Industrial & Scientific

Amazon.com: AC100V-250V 30A High Power 2-Channel Relay High Current DC5V  High-Low Level Trigger Switch Module for Arduino : Electronics
Amazon.com: AC100V-250V 30A High Power 2-Channel Relay High Current DC5V High-Low Level Trigger Switch Module for Arduino : Electronics

Excelity 2 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC  ARM - Amazon.com
Excelity 2 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM - Amazon.com

Amazon.com: SainSmart 2-Channel Relay Module : Automotive
Amazon.com: SainSmart 2-Channel Relay Module : Automotive

AEDIKO 4pcs DC 5V Relay Module 2 Channel Relay Board with Optocoupler  Support High or Low Level Trigger: Amazon.com: Industrial & Scientific
AEDIKO 4pcs DC 5V Relay Module 2 Channel Relay Board with Optocoupler Support High or Low Level Trigger: Amazon.com: Industrial & Scientific

Ac100V-250V 30A 2-Channel Relay Dc5V High-Low Level Trigger Module with  Screw Terminals for Convenient Connection: Amazon.com: Industrial &  Scientific
Ac100V-250V 30A 2-Channel Relay Dc5V High-Low Level Trigger Module with Screw Terminals for Convenient Connection: Amazon.com: Industrial & Scientific

Amazon.com: Optocoupler-Isolated 2 Channel DC 5V Relay Module for Arduino  Raspberry Pi MEGA 2560 DSP AVR PIC ARM MCU STM32, Electronic Experiment,  Smart Home, Industrial Control, Robot : Electronics
Amazon.com: Optocoupler-Isolated 2 Channel DC 5V Relay Module for Arduino Raspberry Pi MEGA 2560 DSP AVR PIC ARM MCU STM32, Electronic Experiment, Smart Home, Industrial Control, Robot : Electronics

Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low  Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP  ARM PIC AVR STM32 Raspberry Pi : Electronics
Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics

Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with  Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
Amazon.com: [2-Pack] DC 12V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific

LM YN 2-Channel Solid State Relay Module High-Low Level Trigger 3A  Optocoupler Isolation: Amazon.com: Industrial & Scientific
LM YN 2-Channel Solid State Relay Module High-Low Level Trigger 3A Optocoupler Isolation: Amazon.com: Industrial & Scientific

Amazon.com: FainWan 2pcs 2 Channel Relay Module with Optocoupler 5V Active  Low Level Amplifier Trigger JD-VCC Relay Power VCC Power : Industrial &  Scientific
Amazon.com: FainWan 2pcs 2 Channel Relay Module with Optocoupler 5V Active Low Level Amplifier Trigger JD-VCC Relay Power VCC Power : Industrial & Scientific

Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with  Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific

Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low  Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP  ARM PIC AVR STM32 Raspberry Pi : Electronics
Amazon.com: SunFounder 2 Channel DC 5V Relay Module with Optocoupler Low Level Trigger Expansion Board Compatible with Arduino R3 MEGA 2560 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Electronics

ESP32 2 Channel 5V Relay Module 4M Byte Flash Large Capacity Programmable Relay  Board for Secondary Development Learning: Amazon.com: Industrial &  Scientific
ESP32 2 Channel 5V Relay Module 4M Byte Flash Large Capacity Programmable Relay Board for Secondary Development Learning: Amazon.com: Industrial & Scientific

Amazon.com: DSD TECH 2 Channel Bluetooth 4.0 BLE Relay Module for iPhone  and Android(12V) : Electronics
Amazon.com: DSD TECH 2 Channel Bluetooth 4.0 BLE Relay Module for iPhone and Android(12V) : Electronics

Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated  Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V  : Industrial & Scientific
Amazon.com: HiLetgo 2pcs DC 12V 2 Channel Relay Module with Isolated Optocoupler High and Low Level H/L Level Trigger Module Triggered by DC 12V : Industrial & Scientific

Tanbupu Relay Module 12VDC 2 Channel Relay Switch Board with OPTO-Isolated  High Or Low Level Trigger Board for Arduino X-002-2-12VDC: Amazon.com:  Industrial & Scientific
Tanbupu Relay Module 12VDC 2 Channel Relay Switch Board with OPTO-Isolated High Or Low Level Trigger Board for Arduino X-002-2-12VDC: Amazon.com: Industrial & Scientific

Amazon.com: 2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low  Level Trigger Expansion Board : Industrial & Scientific
Amazon.com: 2 pcs 5V 2 Channel DC 5V Relay Module with Optocoupler High/Low Level Trigger Expansion Board : Industrial & Scientific

Amazon.com: SainSmart 2-Channel Relay Module : Automotive
Amazon.com: SainSmart 2-Channel Relay Module : Automotive

Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with  Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific
Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific