Amazon.com: D-FLIFE 12V 16-Channel Relay Interface Board Module Optocoupler LED LM2576 Power for Arduino DIY Kit PiC ARM AVR (12V 16-Channel) : Electronics
Amazon.com: EHDIS 24V Starter Relay 500 AMP 4 Pin SPST Car Auto Start Contactor Double Batteries Isolator Control On/Off Switch : Automotive
Amazon.com: 70 Amp Relay
Amazon.com: 70 Amp Relay
Amazon.com: IIVVERR DC 24V Coil PCB Mount Electromagnetic Power Relay TR93F- 24VDC-SC-C (DC 24V Coil PCB Mount Electromagnetic Power Relay TR93F-24VDC-SC-C : Everything Else