AITRIP 2PCS 5V 8 Channel Relay Module with OPTO-Isolated 5V, 8CH-5V-2PCS-Red

2Pcs 5V One Channel Relay Module with Opto Isolation, High/Low Level Trigger

1 channel 5V Relay Module, Opto-coupler isolated, for Arduino and MCU projects.

4pcs 2 Channel 5V Relay Module with Optocoupler - High/Low Trigger Support

2X DC 12V 40A 40 AMP Car Auto Automotive Van Boat Bike 4 Pins SPST Alarm Relay

*Single* Struthers-Dunn 35D203 Relay Enclosure Phenolic

2Pcs DC 24V 1 Channel Relay Module with OPTO Isolation Support High or Low Level