Relay Module 5V x 2 Relay w/ Opto-isolation - ProtoSupplies
Amazon.com: 5vdc (5 Volt DC) Relay - DPDT PCB 8-Pin Mount - Non-Latching Non-Polarized Electronic Low Signal High Sensitivity Relay Module for DIY Electronics and Arduino : Industrial & Scientific
MPD24D2/05BPT 10pcs DC SSR Solid State Relay 5VDC Input 24VDC 2A Output Plug-in Spring Connected Industrial Voltage Relay Module
5V Single-Channel Relay Module - Pin Diagram, Specifications, Applications, Working