4 Channel Relay Module, Optocoupler Relay Module Board High & Low Trigger 5V /12V/24V for Automatic Control Switch(24V) : Amazon.co.uk: Business, Industry & Science
Amazon.com: Aoicrie 5Pcs DC 5V 1 Channel Relay Module Board Shield with Optocoupler Isolation Support High or Low Level Compatible Development Board Trigger : 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
30A DC 5V / 12V / 24V Module de Relais de Déclenchement pour Module de Déclenchement à Couplage Optique Isolé Unidirectionnel à Déclenchement Haut ou Bas : Amazon.fr: Commerce, Industrie et Science
Amazon.co.jp: DROK Time Delay Relay 5V 12V 24V Delay Controller Board Delay Off Self Timer 0.01sec-9999mins Delay Switch Relay Module Support Micro USB 5V Power Supply with LCD (2nd Generation) : DIY,
Amazon.com: HiLetgo 2pcs 5V One Channel Relay Module Relay Switch with OPTO Isolation High Low Level Trigger : Industrial & Scientific
Amazon.com: Delay Timer Relay, 5V/12V/24V DC Self-Locking Delay On Off Time Switch Super 555 Timer (DC12V) : Tools & Home Improvement
NOYITO 2 Channel Relay Module Self-Locking Triggering Interlocking Optocoupler Isolation High Low Level Trigger for PLC Industrial Control (24V): Amazon.com: Industrial & Scientific
eMylo Smart Wireless RF Motor Controller Switch RF Relay Module DC 12V Motor Remote Control Switch 5V-24V 433Mhz Support Rolling Door/Electric Curtains/Locks/Water Pump Control Motor Forward/Reverse : Amazon.ca: Tools & Home Improvement