Amazon.com: Acxico 2Pcs AC-DC Converter AC 110V 220V 230V to DC 5V 12V 24V Power Supply Mini PCB Module(DC 5V 2A Version) : Electronics
YWBL-WH Voltage Protector Relay 2P/32A 230V AC Automatic Reconnect Voltage Protector Digital Voltage Relay Under Voltage Relay, Surge Protector - - Amazon.com
Amazon.com: SainSmart 16-Channel 12V Relay Module Board for Arduino DSP AVR PIC ARM : Everything Else
Amazon.com: Neoteck 2PCs DC 12V Timer Switch 16A Digital Electronic LCD Time Relay Switch Programmable Timer with Wire Connectors Waterproof Cover : Tools & Home Improvement
Amazon.com: Wifi Relay Switch
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
YXQ AC 220V/230V Coil Voltage PCB Power Relay 8 Pins DPDT 2NO 2NC MK2P-1: Amazon.com: 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
DC 5V 16 Channel Relay Module Interface Board for Arduino PIC ARM DSP PLC with Optocoupler Protection LM2576 Power 16Channel: Amazon.com: Industrial & Scientific
FROGBRO Mini Smart WiFi Relay Switch,DIY Timer Light Switch Module Smart Life/Tuya App, Wireless Remote Control Compatible with Alexa and Google Voice Home Smart Speakers - - Amazon.com
Amazon.com: AC100V-250V 30A High Power 2-Channel Relay DC5V High-Low Level Trigger Switch Module for Arduino : Electronics
Amazon.com: Hilitand Cycle Timer,GRT8-S2 Mini Asymmetric Cycle Timer ON/Off Repeat Cycle Time Relay (AC/DC 12-240V) : Tools & Home Improvement
DC 5V 16 Channel Relay Module Interface Board for Arduino PIC ARM DSP PLC with Optocoupler Protection LM2576 Power 16Channel: Amazon.com: Industrial & Scientific
Amazon.com: Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi : Electronics
Amazon.com: Timer Relay AC/DC 12-240V Mini Asymmetric Cycle Timer Relay Switch 35mm DIN Rail Delay Time Relay ON/Off Repeat Delay Time Relay Switch for Cyclic Delay Control : Industrial & Scientific
ANMBEST 10PCS 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino: Amazon.com: Industrial & Scientific
Amazon.com: Automatic Power On Delay Timer Relay,ST3PA-B 0-10S Power On Delay Timer Relay Knob Control Time Relay with Base AC 220V : Tools & Home Improvement
ELEGOO 8 Channel DC 5V Relay Module with Optocoupler for Arduino UNO R3 MEGA 1280 DSP ARM PIC AVR STM32 Raspberry Pi : Amazon.ca: Electronics
ANMBEST 10PCS 5V Relay Module with Optocoupler High or Low Level Trigger Expansion Board for Raspberry Pi Arduino: Amazon.com: Industrial & Scientific
Amazon.com: Lystin 8 Channel DC 5V DC 230V Relay Module Control Board with Optocoupler for UNO R3 MEGA 2560 1280 DSP ARM PIC AVR TTL Logic STM32 Raspberry Pi : Electronics
Amazon.com: 16 A - Solid State Relays / Relays: Industrial & Scientific
Amazon.com: GRT8-S1 Asymmetric Cycle Timer, ON/Off Electronic Repeat Cycle Time Relay AC 220V SPDT Relay : Tools & Home Improvement
Amazon.com: 16 A - Solid State Relays / Relays: Industrial & Scientific
Amazon.com: YWBL-WH Voltage Protector Relay 2P 32A 230V Adjustable Automatic Reconnect Over Voltage And Under Voltage Protection Relay, Surge Protector : Industrial & Scientific