CARLO GAVAZZI RCP800224AC 2 Change Over Contacts, Discontinued by Manufacturer, (DPDT {2-Form C}), 24 VAC Coil, Industrial Relay, RCP Series, 8 PIN Socket MOUNTING, 10 A Contact Rating, MONOSTABLE: Amazon.com: Industrial & Scientific
1 Channel Relay Shield Module, 10PCS DC 5V Indicator Light LED Module for Arduino R3 MEGA 2560 1280 ARM PIC AVR STM32 Raspberry Pi MCU DSP Official Boards Shield (10PCS): Amazon.com: Industrial