Amazon.com: KEYESTUDIO 5V DCAC 4-Channel Relay Hat Shield Module Expansion Board for Raspberry Pi 4/A+/B+/Pi 2 Model B/Pi 3 Model B : Electronics
Amazon.com: ACEIRMC 10pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger (5V) : Industrial & Scientific
SONOFF Mini R2 10A Smart WiFi Wireless Light Switch, Universal DIY Module for Smart Home Automation Solution, Works with Amazon Alexa & Google Home Assistant, No Hub Required - Amazon.com
D4840A 3 Phase Solid State Relay SSR 40A DC-AC 30-480V AC Output Module Switch Relay Relais: Amazon.com: Industrial & Scientific
Amazon.com: 4 SPDT 10Amp Power Relay Module for Raspberry Pi etc IoT Project, DC12V Version : Electronics
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: SainSmart 16-Channel 12V Relay Module Board for Arduino DSP AVR PIC ARM : Electronics
Amazon.com: JBtek 4 Channel DC 5V Relay Module for Arduino Raspberry Pi DSP AVR PIC ARM : Electronics
12V Relay Board Module 16 Channel PLC Controller Serial Port Switch RS485 Relay Module for 64 Devices in Parallel Industrial Electronics: Amazon.com: Industrial & Scientific
1PCS 8 Channel 3.3V Relay Module 3V Optocoupler Module 8 Way Relay Control Board: Amazon.com: Industrial & Scientific
Amazon.com: 4 pcs DC 5V 1 Channel Relay Module Board Shield High/Low Level Trigger with Optocoupler : Industrial & Scientific
Amazon.com: SainSmart 4-Channel Relay Module : Automotive
Amazon.com: AITRIP 10PCS 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger Compatible with Arduino Raspberry pi ARM AVR : Industrial & Scientific
Hilitand 8 Channel Relay Module, 12V 8 CH DB9 RS 232 Relay Module Remote Control Switch Smart Home: Amazon.com: Tools & Home Improvement
Relay Module, 3.3V Relay Module, Safety Industrial Field for MCU Control Smart Home Control PLC Control: Amazon.com: Industrial & Scientific
Amazon.com: HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger : Industrial & Scientific
1PCS 8 Channel 3.3V Relay Module 3V Optocoupler Module 8 Way Relay Control Board: Amazon.com: Industrial & Scientific
5v Relay Module 1 Channel Relay Board for Raspberry Pi with Opto-Isolated High or Low Level Trigger 5v 1 Channel Relay Switch for Arduino: Amazon.com: Industrial & Scientific
250V/10A 1 Channel SPDT Power Relay Module 5V Control for DIY PIC AVR DSP ARM MCU: Amazon.com: Industrial & Scientific
5v Relay Module 1 Channel Relay Board for Raspberry Pi with Opto-Isolated High or Low Level Trigger 5v 1 Channel Relay Switch for Arduino: Amazon.com: Industrial & Scientific
Aqara Dual Relay Module T2 with Matter, Requires Aqara Zigbee 3.0 HUB, Dry Contact Mode for Garage Doors and Boilers, Roller Shade Switch & Light Switch, Supports Homekit and Alexa: Amazon.com: Tools
Amazon.com: ARCELI 5PCS 5V One Channel Relay Module Board Shield 5v Relay Module for PIC AVR DSP ARM for Relay : Electronics
Amazon.com: HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with OPTO 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](https://m.media-amazon.com/images/I/71NNkhe7-5L._AC_UF894,1000_QL80_.jpg "Amazon.com: [2-Pack] DC 5V Relay Module 2-Channel Relay Switch with Optocoupler Isolation High/Low Level Trigger : Industrial & Scientific")