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Square D NEMA Style Control Relay, 24VDC, 10A @ 120/240/480/600V, 5A @ 125/250V, 10 Pins: Amazon.com: Industrial & Scientific
Amazon.com: HiLetgo 4 Channel 24V Relay Module with OPTO-Isolated Support High and Low Level Trigger for PLC Automation Equipment Control : Industrial & Scientific
Schneider Electric 24VDC, 8-Pin Square Base General Purpose General Purpose Relay; AC Contact Rating: 12A @ 277V: Amazon.com: Industrial & Scientific