2 Channel Relay Module 5V 12V 24V Control Board with Optocoupler Isolation High and Low Level Trigger 50x41x18.5mm (24V): Amazon.com: Industrial & Scientific
FINDER 62.33.9.024.0040 Relay, Power, 3PDT, 24VDC, 16A, Socket: Amazon.com: Tools & Home Improvement
DC 24V Time Delay Relay Module Digital Led Delay Timer Module Switch Control Relais Cycle High PerformanceTimer Module: Amazon.com: Industrial & Scientific